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| 1 | Role of LPS/CD14/TLR4-mediated inflammation in necrotizing enterocolitis:Pathogenesis and therapeutic implications显示文摘AIM:To establish the roles of lipopolysaccharide (LPS)/CD14/toll-like receptor 4 (TLR4)-mediated inflammation in a rat model of human necrotizing enterocolitis (NEC).METHODS: Six pairs of intestinal samples from human NEC were collected before and after recovery for histological and molecular analysis of inflammatory cytokines and signaling components. In the rat NEC model, we isolated 10-cm jejunum segments and divided them into six groups (n=6) for sham operation, treatment with LPS, bowel distension, combined bowel distension and LPS stimulation, and two therapeutic groups. The potential eff icacy of a recombinant CD18 peptide and a monoclonal CD14 antibody was evaluated in the latter two groups. The serum and tissue levels of several inflammatory mediators were quantified by real-time polymerase chain reaction, ELISA and immunoblotting.RESULTS: Human acute phase NEC tissues displayed significant increases (P<0.05) in levels of TLR4, CD14, myeloid differentiation protein (MD)-2, tumor necrosis factor (TNF)-α and nuclear factor-κB when compared to those after recovery. The histological and inflammatory picture of human NEC was reproduced in rats that were treated with combined bowel distension and LPS, but not in the sham-operated and other control rats. Serum levels of interleukin-6 and TNF-α were also elevated. The NEC pathology was attenuated by treating the NEC rats with a monoclonal CD14 antibody or an LPS-neutralizing peptide.CONCLUSION:LPS and distension are required to produce the histological and inflammatory features of NEC. A potential treatment option is blocking LPS activation and leukocyte infi ltration. | Kwong L Chan Kwong F Wong John M Luk | 2009 | World Journal of Gastroenterology2009，15，38： | 17 |
| 2 | Increased catabolism and decreased unsaturation of ganglioside in patients with inflammatory bowel disease显示文摘AIM: To investigate whether accelerated catabolism of ganglioside and decreased ganglioside content contribute to the etiology of pro-inflammatory intestinal disease. METHODS: Intestinal mucosa from terminal ileum or colon was obtained from patients with ulcerative colitis or inflammatory Crohn's disease(n = 11) undergoing bowel resection and compared to control samples of normal intestine from patients with benign colon polyps(n = 6) and colorectal cancer(n = 12) in this observational case-control study. Gangliosides and phospholipids of intestinal mucosa were characterized by class and ceramide or fatty acid composition using liquid chromatography triple-quad mass spectrometry. Content and composition of ganglioside classes GM1, GM3, GD3, GD1 a, GT1 and GT3 were compared among subject groups. Content and composition of phospholipid classes phosphatidylcholine(PC) and phosphatidylethanolamine were compared among subject groups. Unsaturation index of individual ganglioside and phospholipid classes was computed and compared among subject groups. Ganglioside catabolism enzymes beta-hexosaminidase A(HEXA) and sialidase-3(NEU3) were measured in intestinal mucosa using western blot and compared among subject groups. RESULTS: Relative GM3 ganglioside content was 2-fold higher(P < 0.05) in intestine from patients with inflammatory bowel disease(IBD) compared to control intestine. The quantity of GM3 and ratio of GM3/GD3 was also higher in IBD intestine than control tissue(P < 0.05). Control intestine exhibited 3-fold higher(P < 0.01) relative GD1 a ganglioside content than IBD intestine. GD3 and GD1 a species of ganglioside containing three unsaturated bonds were present in control intestine, but were not detected in IBD intestine. The relative content of PC containing more than two unsaturated bonds was 30% lower in IBD intestine than control intestine(P < 0.05). The relative content of HEXA in IBD intestine was increased 1.7-fold(P < 0.05) and NEU3 was increased 8.3-fold(P < 0.01) compared to normal intestine. Intestinal mucosa in IBD is characterized by increased GM3 content, decreased GD1 a, and a reduction in polyunsaturated fatty acid constituents in GD3, GD1 a and PC.CONCLUSION: This study suggests a new paradigm by proposing that IBD occurs as a consequence of increased metabolism of specific gangliosides. | John J Miklavcic Glen K Shoemaker Vera C Mazurak M Tom Clandinin Tasha DL Hart Kareena L Schnabl Gordon M Lees Bodil MK Larsen Oliver F Bathe Alan BR Thomson M Tom Clandinin | 2015 | World Journal of Gastroenterology2015，21，35： | 3 |
| 3 | 烧伤的流行病学、人口统计学及结局特点显示文摘 | John L Hunt Gary F Purdue 王劭宏(译) | 2008 | 中华损伤与修复杂志(电子版)2008，3，1： | 3 |
| 4 | Evaluation of C-reactive protein, an inflammatory marker, and infectious serology as risk factors for coronary artery disease and myocardial infarction显示文摘 | Jeffrey L Anderson John F Carlquist Joseph B Muhlestein Benjamin D Horne Sidney P Elmer | 1998 | Journal of the American College of Cardiology1998，，1： | 2 |
| 5 | Reduced striatal volumes in Parkinson’s disease:a magnetic resonance imaging study显示文摘Background:The presence and extent of structural changes in the brain as a consequence of Parkinson’s disease(PD)is still poorly understood.Methods:High-resolution 3-tesla T1-weighted structural magnetic resonance images in sixty-five PD and 27 age-matched healthy control participants were examined.Putamen,caudate,and intracranial volumes were manually traced in the axial plane of 3D reconstructed images.Striatal nuclei volumes were normalized to intracranial volume for statistical comparison.Disease status was assessed using the Unified Parkinson’s Disease Rating Scale and Hoehn and Yahr scale.Cognitive status was assessed using global status tests and detailed neuropsychological testing.Results:Both caudate and putamen volumes were smaller in PD brains compared to controls after adjusting for age and gender.Caudate volumes were reduced by 11%(p=0.001)and putamen volumes by 8.1%(p=0.025).PD striatal volumes were not found to be significantly correlated with cognitive or motor decline.Conclusion:Small,but significant reductions in the volume of both the caudate and putamen occur in PD brains.These reductions are independent of the effects of age and gender,however the relation of these reductions to the functional loss of dopamine,which is characteristic of PD,remains unclear. | Toni L Pitcher Tracy R Melzer Michael R MacAskill Charlotte F Graham Leslie Livingston Ross J Keenan Richard Watts John C Dalrymple-Alford Tim J Anderson | 2012 | Translational Neurodegeneration2012，1，1： | 2 |
| 6 | HPLC determination of flavonoids and terpene lactones in commercial Ginkgo Biloba products显示文摘 | Wenkui L John F | 2002 | Liq Chromalogr Relat Techno12002，25，16： | 1 |
| 7 | R N A expression of breast cancer resistance protein, lung resistance-related protein, muhidrug resistance-associated protein 1 and 2, and muhidrug resistance gene 1 in breast cancer: correlation with chemo-therapeutic re sponse 显示文摘 | Herman B John A F Max ime P L | 2003 | Clin Cancer Res2003，2，9： | 1 |
| 8 | The relationship between dose of vitamin E and suppression of oxidative stress in humans显示文摘 | L Jackson Ⅱ Roberts John A Oates MacRae F Linton | | 0，，10： | 1 |
| 9 | Estimation of tropical forest structural characteristics using large-footprint lidar显示文摘 | Jason B Drake Ralph O Dubayah David B Clark Robert G Knox J.Bryan Blair Michelle A Hofton Robin L Chazdon John F Weishampel Steve Prince | 2001 | Remote Sensing of Environment2001，，2： | 1 |
| 10 | Functional polymers from novel carboxyl-terminated trithiocarbonates as highly efficient RAI agents 显示文摘 | John T L Debby F Rouald S | 2002 | Macromolecules2002，35，： | 1 |
| 11 | Determination of andrographolide in commercial andrographis( andrographis paniculata)products using HPLC with evaporative light scatting detection显示文摘 | Wenkui L John F | 2002 | Liq Chromalogr Relat Techno12002，25，9： | 1 |
| 12 | The Impact of E-commerce on Supply Chain Relationships 显示文摘 | Susan L Golicic Donna F Davis Teresa M McCar-thy John T Mentzer | 2002 | International Journal of Physical Distribution & Logistics Management2002，32，910： | 1 |
| 13 | Characterization of adsorbed species on TiO2 after photocatalytic oxidation of toluene显示文摘 | Catherine M B John L F 2001 | 2001 | J Catal2001，200，1： | 1 |
| 14 | An analysis of the severity and accident duration of truck-involved freeway accidents 显示文摘 | Golob T F Wilfred W R John D L | 1987 | Accident Analysis & Prevention1987，19，5： | 1 |
| 15 | Unscented filtering for spacecraft attitude estimation 显示文摘 | CRASSISIS JOHN L MARKLEY F LANDIS | 2003 | Journal of Guidance Control and Dynamics2003，26，4： | 1 |
| 16 | Increase glutathione hiosynthesis plays a role in nickel tolerance in thlaspi nickel hyperaecumulas显示文摘 | John L F Michael W P Ken N | 2004 | The Plant Cell2004，16，： | 1 |
| 17 | Some properties of paucidisperse gymnosperm lignin sulfonates of different molecular weights显示文摘 | RICHARD F B JOHN A N JOSEPH L M | | 0，，04： | 1 |
| 18 | Interval type-2 fuzzy logic systems made simple显示文摘 | Mendel J M John R I Liu F L | 2006 | IEEE Transactions on Fuzzy Systems2006，14，6： | 1 |
| 19 | 查看详情显示文摘 | Elaine M T Donald J L J John H.L Debbie A M Peter B F Karen B | | 0，，： | 1 |
| 20 | CD4 ^+ T lymphocytes me- diate in vivo clearance of plasmid DNA vaccine antigen expres sion and potentiate CD8^+ T cell immune responses显示文摘 | Ralf G L John R G Kwesi F B | 2008 | Blood2008，112，12： | 1 |
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