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| 1 | Mechanisms underlying feed intolerance in the critically ill: Implications for treatment显示文摘Malnutrition is associated with poor outcomes in critically ill patients. Although nutritional support is yet to be proven to improve mortality in non-malnourished critically ill patients, early enteral feeding is considered best practice. However, enteral feeding is often limited by delayed gastric emptying. The best method to clinically identify delayed gastric emptying and feed intolerance is unclear. Gastric residual volume (GRV) measured at the bedside is widely used as a surrogate marker for gastric emptying, but the value of GRV measurement has recently been disputed. While the mechanisms underlying delayed gastric emptying require further investigation, recent research has given a better appreciation of the pathophysiology. A number of pharmacological strategies are available to improve the success of feeding. Recent data suggest a combination of intravenous metoclopramide and erythromycin to be the most successful treatment, but novel drug therapies should be explored. Simpler methods to access the duodenum and more distal small bowel for feed delivery are also under investigation. This review summarises current understanding of the factors responsible for, and mechanisms underlying feed intolerance in critical illness, together with the evidence for current practices. Areas requiring further research are also highlighted. | Adam Deane Marianne J Chapman Robert J Fraser Laura K Bryant Carly Burgstad Nam Q Nguyen | 2007 | World Journal of Gastroenterology2007，13，29： | 18 |
| 2 | Hydrogen sutfide protects colon cancer cells from chemopreventative agent β-phenylethyl isothiocvanate induced apoptosis显示文摘AIM: Hydrogen sulfide (H2S) is a prominent gaseous constituent of the gastrointestinal (GI) tract with known cytotoxic properties. Endogenous concentrations of H2S are reported to range between 0.2-3.4 mmol/L in the GI tract of mice and humans. Considering such high levels we speculate that, at non-toxic concentrations, H2S may interact with chemical agents and alter the response of colonic epithelium cells to such compounds. The GI tract is a major site for the absorption of phytochemical constituents such as isothiocyanates, flavonoids, and carotenoids, with each group having a role in the prevention of human diseases such as colon cancer. The chemopreventative properties of the phytochemical agent β-phenyethyl isothiocyanate (PEITC) are well recognized. However, little is currently known about the physiological or biochemical factors present in the GI tract that may influence the biological properties of ITCs. The current study was undertaken to determine the effects of H2S on PEITC mediated apoptosis in colon cancer cells.METHODS: Induction of apoptosis by PEITC in human colon cancer HCT116 cells was assessed using classic apoptotic markers namely SubG1 population analysis,caspase-3 like activity and nuclear fragmentation and condensation coupled with the MTT (3-(4,5-dimethylthiazol2-yl)-2,5-diphenyl tetrasodium bromide) viability assay and LDH leakage.RESULTS: PEITC significantly induced apoptosis in HGT116cells as assessed by SubG1 population formation, nuclear condensation, LDH leakage and caspase-3 activity after 24 h, these data being significant from control groups (P<0.01). In contrast, co-treatment of cells with physiological concentrations of H2S (0.1-1 mmol/L) prevented PEITC mediated apoptosis as assessed using the parameters described.CONCLUSION: PEITC effectively induced cell death in the human adenocarcinoma cell line HCT116 in vitro through classic apoptotic mechanisms. However, in the presence of H2S, apoptosis was abolished. These data suggest that H2S may play a significant role in the response of colonic epithelial cells to beneficial as well as toxic agents present within the GI tract. | Peter Rose Philip K Moore Shen Han Ming Ong Choon Nam Jeffrey S Armstrong Matt Whiteman | 2005 | World Journal of Gastroenterology2005，11，26： | 13 |
| 3 | Nutritional care in hospitalized patients with chronic liver disease显示文摘AIM: To evaluate the practice of nutritional assessment and management of hospitalised patients with cirrhosis and the impact of malnutrition on their clinical outcome.METHODS: This was a retrospective cohort study on patients with liver cirrhosis consecutively admitted to the Department of Gastroenterology and Hepatology at the Royal Adelaide Hospital over 24 mo. Details were gathered related to the patients' demographics, disease severity, nutritional status and assessment, biochemistry and clinical outcomes. Nutritional status was assessed by a dietician and determined by subjective global assessment. Estimated energy and protein requirements were calculated by Simple Ratio Method. Intake was estimated from dietary history and/or food charts, and represented as a percentage of estimated daily requirements. Median duration of follow up was 14.9(0-41.4) mo. RESULTS: Of the 231 cirrhotic patients(167 male, age: 56.3 ± 0.9 years, 9% Child-Pugh A, 42% ChildPugh B and 49% Child-Pugh C), 131(57%) had formal nutritional assessment during their admission and 74(56%) were judged to have malnutrition. In-hospitalcaloric(15.6 ± 1.2 kcal/kg vs 23.7 ± 2.3 kcal/kg, P = 0.0003) and protein intake(0.65 ± 0.06 g/kg vs 1.01 ± 0.07 g/kg, P = 0.0003) was significantly reduced in patients with malnutrition. Of the malnourished cohort, 12(16%) received enteral nutrition during hospitalisation and only 6(8%) received ongoing dietetic review and assessment following discharge from hospital. The overall mortality was 51%, and was higher in patients with malnutrition compared to those without(HR = 5.29, 95%CI: 2.31-12.1; P < 0.001). CONCLUSION: Malnutrition is common in hospitalised patients with cirrhosis and is associated with higher mortality. Formal nutritional assessment, however, is inadequate. This highlights the need for meticulous nutritional evaluation and management in these patients. | Dep K Huynh Shane P Selvanderan Hugh AJ Harley Richard H Holloway Nam Q Nguyen | 2015 | World Journal of Gastroenterology2015，21，45： | 6 |
| 4 | Proximal gastric response to small intestinal nutrients is abnormal in mechanically ventilated critically ill patients显示文摘瞄准:在非常有病的病人决定近似的胃的反应到小肠的营养素。方法:近似胃的活动性在 13 个非常有病的病人被测量(49.3 +/- 4.7 年) 并且 12 个健康志愿者(27.7 +/- 2.9 年) 用一种 barostat 技术。记录在基线被执行,在 60-min 期间 intra 十二指肠的注入保证(2 kcal/min ) ,并且为跟随注入的 2 h。最小的扩张压力(MDP ) , intra 袋子体积和底的波浪活动是坚定的。结果:MDP 在病人是更高的(11.7 +/- 1.1 对 7.8 +/- 0.7 毫米汞柱;P <
0.01 ) 。基线 intra 袋子体积在 2 个组是类似的。在健康题目,一“双性人形式”近似胃的体积反应被观察。在病人,近似胃的体积的起始的增加小、推迟,但是最后到达了类似于健康题目的最大的体积。在健康题目,近似胃的体积很快在滋养的注入以后回到了基线水平(中部 18 min ) 。相反,到基线的体积的恢复在非常有病的病人被推迟(中部 106 min ) 。在 6 个病人,体积没在滋养的注入以后回到基线水平 2 小时。在病人,底的体积波浪是不太经常的(P <
0.05 ) 并且有的更低的振幅(P <
0.001 ) ,与健康题目相比。结论:在重病,对小肠的滋养的刺激的近似胃的马达回答是反常的。 | Nam Q Nguyen Robert J Fraser Marianne Chapman Laura K Bryant Richard H Holloway Rosalie Vozzo Christine Feinle-Bisset | 2006 | World Journal of Gastroenterology2006，12，27： | 3 |
| 5 | Determination of penetration depth at high velocity impact using finite element method and artificial neural network tools显示文摘Determination of ballistic performance of an armor solution is a complicated task and evolved significantly with the application of finite element methods(FEM) in this research field.The traditional armor design studies performed with FEM requires sophisticated procedures and intensive computational effort,therefore simpler and accurate numerical approaches are always worthwhile to decrease armor development time.This study aims to apply a hybrid method using FEM simulation and artificial neural network(ANN) analysis to approximate ballistic limit thickness for armor steels.To achieve this objective,a predictive model based on the artificial neural networks is developed to determine ballistic resistance of high hardness armor steels against 7.62 mm armor piercing ammunition.In this methodology,the FEM simulations are used to create training cases for Multilayer Perceptron(MLP) three layer networks.In order to validate FE simulation methodology,ballistic shot tests on 20 mm thickness target were performed according to standard Stanag 4569.Afterwards,the successfully trained ANN(s) is used to predict the ballistic limit thickness of 500 HB high hardness steel armor.Results show that even with limited number of data,FEM-ANN approach can be used to predict ballistic penetration depth with adequate accuracy. | Nam?k KILI? Blent EKICI Selim HARTOMACIOG LU | 2015 | Defence Technology(防务技术)2015，11，2： | 3 |
| 6 | Proximal gastric motility in critically ill patients with type 2 diabetes mellitus显示文摘AIM: To investigate the proximal gastric motor response to duodenal nutrients in critically ill patients with long- standing type 2 diabetes mellitus. METHODS: Proximal gastric motility was assessed (using a barostat) in 10 critically ill patients with type 2 diabetes mellitus (59 ± 3 years) during two 60-min duodenal infusions of Ensure? (1 and 2 kcal/min), in random order, separated by 2 h fasting. Data were compared with 15 non-diabetic critically ill patients (48 ± 5 years) and 10 healthy volunteers (28 ± 3 years). RESULTS: Baseline proximal gastric volumes were similar between the three groups. In diabetic patients, proximal gastric relaxation during 1 kcal/min nutrient infusion was similar to non-diabetic patients and healthy controls. In contrast, relaxation during 2 kcal/ min infusion was initially reduced in diabetic patients (P < 0.05) but increased to a level similar to healthy humans, unlike non-diabetic patients where relaxation was impaired throughout the infusion. Duodenal nutrient stimulation reduced the fundic wave frequency in a dose-dependent fashion in both the critically ill diabetic patients and healthy subjects, but not in critically ill patients without diabetes. Fundic wave frequency in diabetic patients and healthy subjects was greater than in non-diabetic patients. CONCLUSION: In patients with diabetes mellitus, proximal gastric motility is less disturbed than non- diabetic patients during critical illness, suggesting that these patients may not be at greater risk of delayed gastric emptying. | Nam Q Nguyen Robert J Fraser Laura K Bryant Marianne Chapman Richard H Holloway | 2007 | World Journal of Gastroenterology2007，13，2： | 3 |
| 7 | Effectiveness and safety of ureteroscopy in pregnant women: a comparative study显示文摘 | Yasar Bozkurt Haluk Soylemez Murat Atar Ahmet Ali Sancaktutar Necmettin Penbegul Nam?k Kemal Hatipoglu Mehmet Nuri Bodakc? Mehmet S?dd?k Evsen | 2013 | Urolithiasis2013，，1： | 2 |
| 8 | Intracranial inhibition of glioma cell growth by cyclooxygenase-2 inhibitor celecoxib 显示文摘 | Nam DH Park K Park C | 2004 | Oncol Rep2004，11，2： | 1 |
| 9 | Relationship between organic matter content of soil and the sequestration of phenanthrene显示文摘 | Nam K Chung N Alexander M | 1998 | Environ Sci Technol1998，32，23： | 1 |
| 10 | Identification of three genetic loci controlling leaf senescence in Arabidopsis thaliana显示文摘 | OH S A PARK J H LEE G I PACK K H PARK S K NAM H G | 1997 | Plant Journal1997，12，3： | 1 |
| 11 | Transmit power allocation for a modified V-BLAST system显示文摘 | Nam S H Shin O S Lee K B | 2004 | IEEE Transactions on Communications2004，52，7： | 1 |
| 12 | Correlation between characteristics of grain boundary carbides and creep-fatigue properties in AISI 321 stainless steel 显示文摘 | Min K S Nam S W | 2003 | Journal of Nuclear Materials2003，322，： | 1 |
| 13 | Prevention of lipid radiolysis by natural antioxidants from rosemary and thyme 显示文摘 | Lacroix M Smoragiewicz W Nam K C | 1997 | Food Research International1997，30，6： | 1 |
| 14 | A new FPGA detailed routing approach via search-based Boolean satisfiability 显示文摘 | Nam G J Sakallah K A tenbar R A | 2002 | IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems2002，21，6： | 1 |
| 15 | Carbon source recovery from waste activated sludge by alkaline hydrolysis and gamma - ray irradiation for biological denitrification 显示文摘 | Kim T H Nam Y K Park C | 2009 | Bioresource Technology2009，100，： | 1 |
| 16 | Nucleation and growth behavior of chromium nitride film deposited on various substrates by magnetron sputtering显示文摘 | Jung M J Nam K H Jung Y M | 2003 | Surface and Coatings Technology2003，171，： | 1 |
| 17 | The mitochondrial death pathway and cardiac myocyte apoptosis显示文摘 | CROW M T MANI K NAM Y J | 2004 | Circ Res2004，95，10： | 1 |
| 18 | Multiresolution edge detection techniques显示文摘 | Park D J Nam K M Park R H | 1995 | Pattern Recognition1995，28，2： | 1 |
| 19 | Cytotoxic activities of acetoxyscirpenediol and ergosterol peroxide from Paecilomyces tenuipes显示文摘 | Nam K S Jo Y S Kim Y H | 2001 | Life sci2001，69，2： | 1 |
| 20 | BRI1/BAK1, a receptor kinase pair mediating brassinosteroid signaling显示文摘 | Nam K H | 2004 | Cell2004，110，： | 1 |
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