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389篇 您的检索式:作者名="MICHAEL L K"
    题名 作者 年代 出处 被引量
1Endocrine impact of Helicobacter pylori:Focus on ghrelin and ghrelin o-acyltransferase显示文摘Ghrelin is predominantly produced by the gastric enteroendocrine cell compartment and is octanoylated by the recently discovered ghrelin o-acyltransferase (GOAT) before secretion into the bloodstream. This octanoylation is essential for many of the biological properties of ghrelin including appetite stimulation and anti-inflammatory properties as only the acylated form of ghrelin binds to the ghrelin receptor, the growth hormone secretagogue receptor (GHS-R). Given the gastric location of ghrelin production, it is perhaps not surprising that insult to the gastric mucosa affects circulating ghrelin levels in humans. Helicobacter pylori (H. pylori) infects more than f ifty percent of the world's population and once established within the gastric mucosa, can persist for life. Infection is associated with chronic gastritis, gastric atrophy and ulceration, reduced appetite and a lower body mass index (BMI). The large majority of studies investigating levels of circulating ghrelin and ghrelin expression in the stomach in patients with H. pylori infection indicate that the bacterium has a negative impact on ghrelin production and/or secretion. Eradication of infection restores ghrelin, improves appetite and increases BMI in some studies, however, a causative relationship between H. pylori-associated serum ghrelin decline and food intake and obesity has not been established. Most studies measure total ghrelin in the circulation although the measurement of the ratio of acyl/total ghrelin gives a clearer indication that the ghrelin acylation process is altered during infection and atrophy. GOAT is essential for the production of biologically-active, acyl ghrelin and the impact of H. pylori on GOAT expression and activity will be highly informative in the future.Penny L Jeffery Michael A McGuckin Sara K Linden 2011World Journal of Gastroenterology2011,17,10:12
2Inflammatory bowel disease in Asia: A systematic review显示文摘Lani Prideaux Michael A Kamm Peter P De Cruz Francis K L Chan Siew C Ng 2012Journal of Gastroenterology and Hepatology2012,,8:5
3Nat Genet:单基因突变导致过敏性皮炎的发生显示文摘最近,研究者们鉴定出了一类导致神经性皮炎发生的关键基因突变:CARDll。来自美国NIH过敏与传染病研究所的研究者们通过对四个没有血缘关系的患病家庭进行分析,发现了这一导致疾病产生的基因、Chi A Ma, Yuan Zhang, Michael A Weinreich, Jonathan J Lyons, Celeste G Nelson, Thomas DiMaggio, Kelly D Stone, Joshua D Milner Jeffrey R Stinson, Elisa Ruffo, Batsukh Dorjbal, Swadhinya Arjunaraja, Kelsey Voss, Andrew L Snow Jordan K Abbott, Pia J Hauk, Paul R Reynolds, Erwin W Gelfand Elisa Ruffo Salomé Glauzy, Natsuko Yamakawa, Eric Meffre Jennifer Stoddard, Julie Niemela, Sergio D Rosenzweig Yu Zhang, Helen F Matthews Joshua J McElwee Nina Jones Alejandro Palma, Matías Oleastro, Emma Prieto, Andrea R Bernasconi, Geronimo Dubra, Silvia Danielian, Jonathan Zaiat, Marcelo A Marti Brian Kim Megan A Cooper Neil Romberg 2017现代生物医学进展2017,17,27:3
4PI 3-kinase pathway is responsible for antiapoptotic effects of atrial natriuretic peptide in rat liver transplantation显示文摘AIM:To investigate the in vivo effect of atrial natriureticpeptide(ANP)and its signaling pathway during ortho-topic rat liver transplantation.METHODS:Rats were infused with NaCl,ANP(5 μg/kg),wortmannin(WM,16 μg/kg),or a combination ofboth for 20 min.Livers were stored in UW solution(4°C)for 24 h,transplanted and reperfused.Apoptosis wasexamined by caspase-3 activity and TUNEL staining.Phosphorylation of Akt and Bad was visualized by West-ern blotting and phospho-Akt-localization by confocalmicroscopy.RESULTS:ANP-pretreatment decreased caspase-3activity and TUNEL-positive cells after cold ischemia,indicating antiapoptotic effects of ANP in vivo.The an-tiapoptotic signaling of ANP was most likely caused byphosphorylation of Akt and Bad,since pretreatment withPI 3-kinase inhibitor WM abrogated the ANP-inducedreduction of caspase-3 activity.Interestingly,analysis ofliver tissue by confocal microscopy showed translocationof phosphorylated Akt to the plasma membrane of hepa-tocytes evoked by ANP.CONCLUSION:ANP activates the PI-3-kinase pathwayin the liver in vivo leading to phosphorylation of Bad, an event triggering antiapoptotic signaling cascade inischemic liver.Uwe Grutzner Melanie Keller Michael Bach Alexandra K Kiemer Herbert Meissner Manfred Bilzer Stefan Zahler Alexander L Gerbes Angelika M Vollmar 2006World Journal of Gastroenterology2006,12,7:3
5A semi-automated in vitro gas production technique for ruminant feedstuff evaluation显示文摘Rogerio M Mauricio Fergus L Mould Mewa S Dhanoa Emyr Owen Kulwant S Channa Michael K Theodorou 1999Animal Feed Science and Technology1999,,4:2
6Cardiac resynchronization therapy for the treatment of heart failure in patients with intraventricular conduction delay and malignant ventricular tachyarrhythmias显示文摘Steven L Higgins John D Hummel Imran K Niazi Michael C Giudici Seth J Worley Leslie A Saxon John P Boehmer Michael B Higginbotham Teresa De Marco Elyse Foster Patrick G Yong 2003Journal of the American College of Cardiology2003,,8:2
7Effect of weekend admission on geriatric hip fractures显示文摘BACKGROUND The care discrepancy for patients presenting to a hospital on the weekend relative to the work week is well documented.With respect to hip fractures,however,there is no consensus about the presence of a so-called“weekend effect”.This study sought to determine the effects,if any,of weekend admission on care of geriatric hip fractures admitted to a large tertiary care hospital.It was hypothesized that geriatric hip fracture patients admitted on a weekend would have longer times to medical optimization and surgery and increased complication and mortality rates relative to those admitted on a weekday.AIM To determine if weekend admission of geriatric hip fractures is associated with poor outcome measures and surgical delay.METHODS A retrospective chart review of operative geriatric hip fractures treated from 2015-2017 at a large tertiary care hospital was conducted.Two cohorts were compared:patients who arrived at the emergency department on a weekend,and those that arrived at the emergency department on a weekday.Primary outcome measures included mortality rate,complication rate,transfusion rate,and length of stay.Secondary outcome measures included time from emergency department arrival to surgery,time from emergency department arrival to medical optimization,and time from medical optimization to surgery.RESULTS There were no statistically significant differences in length of stay(P=0.2734),transfusion rate(P=0.9325),or mortality rate(P=0.3460)between the weekend and weekday cohorts.Complication rate was higher in patients who presented on a weekend compared to patients who presented on a weekday(13.3%vs 8.3%;P=0.044).Time from emergency department arrival to medical optimization(22.7 h vs 20.0 h;P=0.0015),time from medical optimization to surgery(13.9 h vs 10.8 h;P=0.0172),and time from emergency department arrival to surgery(42.7 h vs 32.5 h;P<0.0001)were all significantly longer in patients who presented to the hospital on a weekend compared to patients who presented to the hospital on a weekday.CONCLUSION This study provided insight into the“weekend effect”for geriatric hip fractures and found that day of presentation has a clinically significant impact on delivered care.Jordan B Pasternack Matthew L Ciminero Michael Silver Joseph Chang Ronald J Simon Kevin K Kang 2020World Journal of Orthopedics2020,11,9:2
8Effective primary isolation of wild-type canine distemper virus in MDCK,MV1 Lu and Vero cells without nucleotide sequence changes within the entire haemagglutinin protein gene and in subgenomic sections of the fusion and phospho protein genes显示文摘John A L Thomas P M Michael J K 2004Virology2004,118,:1
9The Interaction among Multiple Governance Mechanisms in Young Newly Public Irms 显示文摘Tammy K Berry Fields L Paige Wilkins Michael S 2006Journal of Corporate Finance2006,12,3:1
10Automatic Representation of Fingerprints for Data Compression by B-Spline Functions显示文摘Michael Chong M S Robert Gay K L Tan H N Liu J 1992Pattern Recognition1992,25,10:1
11Neurohormonal activation and the chronic heart failure syndrome in adults with congenital heart disease显示文摘Marjolein L Michael K Andrew JS 2002Circ J2002,106,1:1
12Accelerated Amyloid Deposition in the Brains of Transgenic Mice Coexpressing Mutant Presenilin 1 and Amyloid Precursor Proteins显示文摘David R Borchelt Tamara Ratovitski Judy van Lare Michael K Lee Vicki Gonzales Nancy A Jenkins Neal G Copeland Donald L Price Sangram S Sisodia 1997Neuron1997,,4:1
13Bacterial RNA chaperones confer abiotic stress tolerance in plants and improved grain yield in maize under water-limited condition 显示文摘Paolo C Dave W Robert J B Don C A Jay H Martin S Mark A Ganesh K Sara S Robert D Santiago N Stephanie B Mary F Jayaprakash T Santanu D Christopher B Michael H L Jacqueline E H 2008Plant Physiology2008,147,2:1
14Thomashow components of the Arabidopsis C repeat/dehydration responsive element bindingfactor cold-response pathway are conserved in Brassica napus and other plant species显示文摘KIRSTEN R J SUSANNE K KEENAN L A XIN Z VOLKER H JAMES Z Z THOMAS D MICHAEL F 2001Plant Plzysiology2001,127,3:1
15Endogenous myocardial tumor necrosis factor protects the adult cardiac myocyte againwt ischemic-induced apoptosis in a muxine model of acute myocardial imfarction显示文摘Kurrielmeyer K Michael L Baumgarten G 2000Proc Natl Acad Sci USA2000,290,:1
16Growth of anaerobic rumen fungi on defined and semi-defined media lacking rumen fluid显示文摘Susane E L Michael K T Anthony P J T 1985J General Microbiology1985,131,:1
17Cysteine protease gene expression and proteolytic activity during senescence of Alstroemeria petals显示文摘Carol W Michael K L Gareth G 2002Journal of Experimental Botany2002,53,:1
18The plausibility of micronutrient deficiencies being a significant contributing factor to the occurrence of pregnancy complications 显示文摘Carl L K Michael S C Lynn A H 2003J Nutr2003,133,:1
19From the waters of Babylon Populus euphratica in Spain is clonal and probably introduced显示文摘MICHAEL F F DOLORES M L MOLLY M K 0,,08:1
20Voluntary disclosure by state-owned enterprises listed on the Stock Exchange of Hong Kong 显示文摘Michael J F Kevin C K Grace M L 2002Journal of International Financial Management and Accounting2002,13,2:1
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