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排序方式: 共有242条查询结果,搜索用时 486 毫秒
141.
David G. Watt Michael J. Proctor James H. Park Paul G. Horgan Donald C. McMillan 《PloS one》2015,10(11)
Introduction
Recent in-vitro studies have suggested that a critical checkpoint early in the inflammatory process involves the interaction between neutrophils and platelets. This confirms the importance of the innate immune system in the elaboration of the systemic inflammatory response. The aim of the present study was to examine whether a combination of the neutrophil and platelet counts were predictive of survival in patients with cancer.Methods
Patients with histologically proven colorectal cancer who underwent potentially curative resection at a single centre between March 1999 and May 2013 (n = 796) and patients with cancer from the Glasgow Inflammation Outcome Study, who had a blood sample taken between January 2000 and December 2007 (n = 9649) were included in the analysis.Results
In the colorectal cancer cohort, there were 173 cancer and 135 non-cancer deaths. In patients undergoing elective surgery, cancer-specific survival (CSS) at 5 years ranged from 97% in patients with TNM I disease and NPS = 0 to 57% in patients with TNM III disease and NPS = 2 (p = 0.019) and in patients undergoing elective surgery for node-negative colon cancer from 98% (TNM I, NPS = 0) to 65% (TNM II, NPS = 2) (p = 0.004). In those with a variety of common cancers there were 5218 cancer and 929 non-cancer deaths. On multivariate analysis, adjusting for age and sex and stratified by tumour site, incremental increase in the NPS was significantly associated with poorer CSS (p<0.001).Conclusion
The neutrophil-platelet score predicted survival in a variety of common cancers and highlights the importance of the innate immune system in patients with cancer. 相似文献142.
143.
Horgan AM Marshall AJ Kew SJ Dean KE Creasey CD Kabilan S 《Biosensors & bioelectronics》2006,21(9):1838-1845
A holographic sensor for the detection of glucose has been developed that is based on a hydrogel film containing phenylboronic acid receptors. Changes to the replay wavelength of the hologram were used to characterise the swelling and de-swelling behaviour of the hydrogel matrix upon receptor-ligand binding. The effect of introducing a fixed positive charge into the polymer matrix by modification of the hydrogel with a quaternary amine group (3-acrylamidopropyl)trimethylammonium chloride (ATMA), was investigated for a range of sugars and the alpha-hydroxy acid, lactate, at physiological pH. The quaternary amine-modified hydrogel matrix was found to contract in the presence of glucose, whereas, it was minimally responsive to other saccharides. The selectivity of the sensor for glucose compared to lactate was also significantly improved compared to the unmodified film. A crosslinking mechanism is proposed to explain the enhanced selectivity to glucose. 相似文献
144.
145.
Rungapamestry V McMonagle J Reynolds C Rucklidge G Reid M Duncan G Ross K Horgan G Toomey S Moloney AP Roos Bd Roche HM 《Proteomics》2012,12(3):461-476
cis‐9, trans‐11‐Conjugated linoleic acid (c9 t11 CLA) exerts anti‐diabetic effects by improving systemic insulin sensitivity and inflammation. Levels of CLA in beef can be increased by feeding cattle on pasture. This study aimed to explore the efficacy of a CLA‐rich diet (0.6% w/w c9 t11 CLA), presented as beef enriched with CLA or beef supplemented with synthetic CLA (c9 t11 CLA), for 28 days on molecular biomarkers of the metabolic syndrome, and adipose, hepatic, and skeletal muscle proteome in male ob/ob mice. Despite equal weight gain, CLA‐fed mice had lower plasma glucose, insulin, non‐esterified fatty acid, triacylglycerol and interleukin‐6, and higher adiponectin concentrations than controls. c9 t11 CLA induced differential regulation of redox status across all tissues, and decreased hepatic and muscle endoplasmic reticulum stress. CLA also modulated mechanistic links between the actin cytoskeleton, insulin signalling, glucose transport and inflammation in the adipose tissue. In the liver and muscle, c9 t11 CLA improved metabolic flexibility through co‐ordination between carbohydrate and energy metabolism. c9 t11 CLA may ameliorate systemic insulin sensitivity in obesity‐induced diabetes by altering cellular stress and redox status, and modulating nutrient handling in key insulin‐sensitive tissues through complex biochemical interplay among representative proteomic signatures. 相似文献
146.
L. Katie Crosley Susan J. Duthie Abigael C. Polley Freek G. Bouwman Carolin Heim Francis Mulholland Graham Horgan Ian T. Johnson Edwin C. Mariman Ruan M. Elliott Hannelore Daniel Baukje de Roos 《Genes & nutrition》2009,4(2):95-102
Blood cells and biofluid proteomics are emerging as a valuable tool to assess effects of interventions on health and disease. This study is aimed to assess the amount and variability of proteins from platelets, peripheral blood mononuclear cells (PBMC), plasma, urine and saliva from ten healthy volunteers for proteomics analysis, and whether protein yield is affected by prolonged fasting. Volunteers provided blood, saliva and morning urine samples once a week for 4 weeks after an overnight fast. Volunteers were fasted for a further 24 h after the fourth sampling before providing their final samples. Each 10 mL whole blood provided 400–1,500 μg protein from platelets, and 100–600 μg from PBMC. 30 μL plasma depleted of albumin and IgG provided 350–650 μg protein. A sample of morning urine provided 0.9–8.6 mg protein/dL, and a sample of saliva provided 70–950 μg protein/mL. None of these yields were influenced by the degree of fasting (overnight or 36 h). In conclusion, in contrast to the yields from plasma, platelets and PBMC, the protein yields of urine and saliva samples were highly variable within and between subjects. Certain disease conditions may cause higher or lower PBMC counts and thus protein yields, or increased urinary protein levels. 相似文献
147.
Bruno Gomes Carla A Sousa Maria T Novo Ferdinando B Freitas Ricardo Alves Ana R Côrte-Real Patrícia Salgueiro Martin J Donnelly António PG Almeida João Pinto 《BMC evolutionary biology》2009,9(1):262-15
Background
Culex pipiens L. is the most widespread mosquito vector in temperate regions. This species consists of two forms, denoted molestus and pipiens, that exhibit important behavioural and physiological differences. The evolutionary relationships and taxonomic status of these forms remain unclear. In northern European latitudes molestus and pipiens populations occupy different habitats (underground vs. aboveground), a separation that most likely promotes genetic isolation between forms. However, the same does not hold in southern Europe where both forms occur aboveground in sympatry. In these southern habitats, the extent of hybridisation and its impact on the extent of genetic divergence between forms under sympatric conditions has not been clarified. For this purpose, we have used phenotypic and genetic data to characterise Cx. pipiens collected aboveground in Portugal. Our aims were to determine levels of genetic differentiation and the degree of hybridisation between forms occurring in sympatry, and to relate these with both evolutionary and epidemiological tenets of this biological group. 相似文献148.
Phage Lysin LysK Can Be Truncated to Its CHAP Domain and Retain Lytic Activity against Live Antibiotic-Resistant Staphylococci
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Marianne Horgan Gary OFlynn Jennifer Garry Jakki Cooney Aidan Coffey Gerald F. Fitzgerald R. Paul Ross Olivia McAuliffe 《Applied microbiology》2009,75(3):872-874
A truncated derivative of the phage endolysin LysK containing only the CHAP (cysteine- and histidine-dependent amidohydrolase/peptidase) domain exhibited lytic activity against live clinical staphylococcal isolates, including methicillin-resistant Staphylococcus aureus. This is the first known report of a truncated phage lysin which retains high lytic activity against live staphylococcal cells. 相似文献
149.
Eoin E. Kelly Conor P. Horgan Christine Adams Tomasz M. Patzer Deirdre M. Ní Shúilleabháin Jim C. Norman Mary W. McCaffrey 《Biology of the cell / under the auspices of the European Cell Biology Organization》2010,102(1):51-62
Background information. Rab11 and Rab14 are two related Rab GTPases that are believed to function in endosomal recycling and Golgi/endosome transport processes. We, and others, have identified a group of proteins that interact with Rab11 and function as Rab11 effectors, known as the Rab11‐FIPs (family interacting proteins). This protein family has been sub‐classified into two groups—class I FIPs [FIP2, RCP (Rab coupling protein) and Rip11 (Rab11‐interacting protein)] and class II FIPs (FIP3 and FIP4). Results. In the present study we identify the class I FIPs as dual Rab‐binding proteins by demonstrating that they also interact with Rab14 in a GTP‐dependent manner. We show that these interactions are specific for the class I FIPs and that they occur via their C‐terminal regions, which encompass the previously described RBD (Rab11‐binding domain). Furthermore, we show that Rab14 significantly co‐localizes with the TfnR (transferrin receptor) and that Rab14 Q70L co‐localizes with Rab11a and with the class I FIPs on the ERC (endosomal recycling compartment) during interphase. Additionally, we show that during cytokinesis Rab14 localizes to the cleavage furrow/midbody. Conclusions. The data presented in the present study, which identifies the class I FIPs as the first putative effector proteins for the Rab14 GTPase, indicates greater complexity in the Rab‐binding specificity of the class I FIP proteins. 相似文献
150.
Beattie JH Gordon MJ Rucklidge GJ Reid MD Duncan GJ Horgan GW Cho YE Kwun IS 《Proteomics》2008,8(10):2126-2135
Human zinc deficiency is a global problem and may influence the development of cardiovascular disease. Our objective was to determine Zn deficiency affected pathways and protein interactions in rat aorta and their likely influence on stress-induced atherogenesis. In two separate studies, rats were given diets acutely (<1 mg Zn/kg) or marginally (6 mg Zn/kg) deficient in Zn. Both studies included Zn adequate controls (35 mg Zn/kg) and the acute deficiency study included a pair-fed group. After 6 wk, proteins from thoracic aorta were separated by 2-DE. Proteins affected by zinc deficiency were identified by principal component analysis. Multiple correlations of identified proteins indicated protein networks of related function. Proteins clusters decreased in zinc deficiency were related to fatty acid and carbohydrate metabolism. Structurally related proteins, including zyxin and over nine transgelin 1 proteins, were either increased or decreased by acute and marginal deficiencies. PKC alpha was significantly decreased in Zn deficiency suggesting that Zn may regulate the phosphorylation of target proteins. Zn deficiency-related changes in structural, carbohydrate and fatty acid-related proteins may be disadvantageous for maintaining vascular health and are consistent with a protective role for zinc in the development of atherosclerosis. 相似文献