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462篇 您的检索式:作者名="Stevens L R"
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1Phase angle obtained by bioelectrical impedance analysis independently predicts mortality in patients with cirrhosis显示文摘AIM To evaluate the prognostic value of the phase angle(PA)obtained from bioelectrical impedance analysis(BIA) for mortality prediction in patients with cirrhosis. METHODS In total, 134 male cirrhotic patients prospectively completed clinical evaluations and nutritional assessment by BIA to obtain PAs during a 36-mo follow-up period. Mortality risk was analyzed by applying the PA cutoff point recently proposed as a malnutrition marker(PA ≤ 4.9°) in Kaplan-Meier curves and multivariate Cox regression models. RESULTS The patients were divided into two groups according to the PA cutoff value(PA > 4.9°, n = 73; PA ≤ 4.9°, n = 61). Weight, height, and body mass index were similar in both groups, but patients with PAs > 4.9° were younger and had higher mid-arm muscle circumference, albumin, and handgrip-strength values and lower severe ascites and encephalopathy incidences, interleukin(IL)-6/IL-10 ratios and C-reactive protein levels than did patients with PAs ≤ 4.9°(P ≤ 0.05). Forty-eight(35.80%) patients died due to cirrhosis, with a median of 18 mo(interquartile range, 3.3-25.6 mo) follow-up until death. Thirty-one(64.60%) of these patients were from the PA ≤ 4.9° group. PA ≤ 4.9° significantly and independently affected the mortality model adjusted for Model for End-Stage Liver Disease score and age(hazard ratio = 2.05, 95%CI: 1.11-3.77, P = 0.021). In addition, Kaplan-Meier curves showed that patients with PAs ≤ 4.9° were significantly more likely to die. CONCLUSION In male patients with cirrhosis, the PA ≤ 4.9° cutoff was associated independently with mortality and identified patients with worse metabolic, nutritional, and disease progression profiles. The PA may be a useful and reliable bedside tool to evaluate prognosis in cirrhosis.Giliane Belarmino Maria Cristina Gonzalez Raquel S Torrinhas Priscila Sala Wellington Andraus Luiz Augusto Carneiro D'Albuquerque Rosa Maria R Pereira Valéria F Caparbo Graziela R Ravacci Lucas Damiani Steven B Heymsfield Dan L Waitzberg 2017World Journal of Hepatology2017,9,7:11
2Neonatal vitamin A injection promotes cattle muscle growth and increases oxidative muscle fibers显示文摘Background: Vitamin A and its metabolite,retinoic acid(RA),are important regulators of cell differentiation and organ morphogenesis.Its impact on beef cattle muscle growth remains undefined.Method: Angus steer calves were administrated with 0(control) or 150,000 IU vitamin A(retinyl palmitate in glycerol,i.m.) per calf at birth and 1 month of age.At 2 months of age,a biopsy of the Biceps femoris muscle was obtained to analyze the immediate effects of vitamin A injection on myogenic capacity of muscle cells.The resulting steers were harvested at 14 months of age.Results: Vitamin A administration increased cattle growth at 2 months.At 2 months of age,Vitamin A increased PAX7 positive satellite cells and the expression of myogenic marker genes including PAX7,MYF5,MYOD and MYOG.Muscle derived mononuclear cells were further isolated and induced myogenesis in vitro.More myotubes and a higher degree of myogenesis was observed in vitamin A groups.Consistently,vitamin A increased Latissimus dorsi(LD) muscle fiber size at harvest.In addition,vitamin A increased the ratio of oxidative type I and type IIA fibers and reduced the glycolic type IIX fibers.Furthermore,we found that RA,a key bioactive metabolite of vitamin A,activated PPARGC1 A promoter,which explains the upregulated expression of PPARGC1 A in skeletal muscle.Conclusion: Vitamin A administration to neonatal calves enhanced postnatal muscle growth by promoting myogenesis and increasing satellite cell density,accompanied with a shift to oxidative muscle fibers.Bo Wang Wei Nie Xing Fu Jeanene M de Avila Yannan Ma Mei-Jun Zhu Martin Maquivar Steven M Parish Jan R Busboom Mark L Nelson Min Du 2019Journal of Animal Science and Biotechnology2019,10,1:3
3A confidence limit for the empirical mode decomposition and Hilbert spectral analysis显示文摘Huang Norden E Wu Man-Li C Long Steven R Shen Samuel S.P Qu Wendong Gloersen Per Fan Kuang L 2003Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences . 2003 (2037)2003,,2037:3
4Metastatic recurrence to a solitary lymph node four years after hepatic lobectomy for primary hepatocellular carcinoma显示文摘This report describes a patient that developed recurrent metastatic hepatocellular carcinoma(HCC) to a suprapancreatic lymph node four years after being treated for primary HCC via complete left hepatectomy. Metastatic HCC was proven by pathologic confirmation. The report addresses the role of surgical resection as a treatment modality for recurrent HCC to solitary lymph nodes. The role of biological chemotherapy as adjuvant treatment is also addressed.Michael L Caparelli Nathan J Roberts Timothy S Braverman Robert M Stevens Edward R Broun Shyam Allamaneni 2016World Journal of Hepatology2016,8,23:2
5Inflammation and Alzheimer’s disease显示文摘Haruhiko Akiyama Steven Barger Scott Barnum Bonnie Bradt Joachim Bauer Greg M Cole Neil R Cooper Piet Eikelenboom Mark Emmerling Berndt L Fiebich Caleb E Finch Sally Frautschy W.S.T Griffin Harald Hampel Michael Hull Gary Landreth Lih–Fen Lue Robert Mrak 2000Neurobiology of Aging2000,,3:2
6Epidemiology and outcomes of osteoporotic fractures显示文摘Steven R Cummings L Joseph Melton 2002The Lancet2002,,9319:2
7Epidemiology and outcomes of osteoporotic fractures显示文摘Steven R Cummings L Joseph Melton 2002The Lancet2002,,9319:2
8Appendectomy and Clostridium difficile colitis:Relationships revealed by clinical observations and immunology显示文摘Advances in understanding the interaction between the human immune system and the microbiome have led to an improved understanding of the function of the vermiform appendix as a safe-house for beneficial bacteria in the colon.These advances have been made despite long standing clinical observations that the appendectomy is a safe and effective procedure.However,more recent clinical data show that an appendectomy puts patients at increased risk for recurrent Clostridium difficile(C.difficile)-associated colitis,and probably other diseases associated with an altered microbiome.At the same time,appendectomy does not apparently put patients at risk for an initial onset of C.difficile-associated colitis.These clinical observations point toward the idea that the vermiform appendix might not effectively protect the microbiome in the face of broad spectrum antibiotics,the use of which precedes the initial onset of C.difficile-associated colitis.Further,these observations point to the idea that historically important threats to the microbiome such as infectious gastrointestinal pathogens have been supplanted by other threats,particularly the use of broad spectrum antibiotics.Nathan L Sanders R Randal Bollinger Ryan Lee Steven Thomas William Parker 2013World Journal of Gastroenterology2013,19,34:2
9Phenotypic instability and rapid gene silencing in newly formed Arabidopsis alloteraploids显示文摘Comai L Tyagi A P Winter K Holmes-Davis R Reynolds S H Stevens Y Byers B 2000Plant Cell2000,12,9:2
10Soil moisture: A central and unifying theme in physical geography显示文摘Legates David R Mahmood Rezaul Levia Delphis F DeLiberty Tracy L Quiring Steven M Houser Chris Nelson Frederick E 2011Progress in Physical Geography2011,,1:2
11A confidence limit for the empirical mode decomposition and Hilbert spectral analysis显示文摘Huang Norden E Wu Man-Li C Long Steven R Shen Samuel S.P Qu Wendong Gloersen Per Fan Kuang L 2003Proceedings of the Royal Society A: Mathematical Physical and Engineering Sciences2003,,2037:2
12Complete genomes of two clinical Staphylococcus aureus strains:evidence for the rapid evolution of virulence and drug resistance显示文摘Holden MT Feil EJ Lindsay JA Peacock SJ Day NP Enright MC Foster TJ Moore CE Hurst L Atkin R Barron A Bason N Bentley SD Chillingworth C Chillingworth T Churcher C Clark L Corton C Cronin A Doggett J Dowd L Feltwell T Hance Z Harris B Hauser H Holroyd S Jagels K James KD Lennard N Line A Mayes R Moule S Mungall K Ormond D Quail MA Rabbinowitsch E Rutherford K Sanders M Sharp S Simmonds M Stevens K Whitehead S Barrell BG Spratt BG Parkhill J 2004Proc Natl Acad Sci USA2004,101,26:1
13Heavy metal assessment for surface sediments fromthree areas of the Portuguese continental shelf 显示文摘Mil-Homens M Stevens R L Abrantes F 2006Continental Shelf Research2006,26,10:1
14Storage stability of biodiesel and biodiesel blends显示文摘Robert L McCormick Steven R Westbrook 2010Energy Fuels2010,24,:1
15Determination of the simultaneous production and consumption of soil nitrite using 15N 显示文摘Burns L C Stevens R J Laughlin R J 1995Soil Biology and Biochemistry1995,27,:1
16The Empirical Mode Decomposition and the Hilbert Spectrum for Nonlinear and Non-stationary Time Series Analysis显示文摘Huang N E Zheng S Steven R L 1998Proceedings of the Royal Society A1998,,:1
17Use of buffeting and other means to improve results of problem atic pesticides in a fast and easy method for residue analysis of fruits and vegetables 显示文摘STEVEN J L KATEIINA M ALAN R L 2005JAOAC Int2005,88,2:1
18The influence of ultimate pH and intramuscular fat content on pork tenderness and tenderization 显示文摘van Laack R L Stevens S G Stalder K J 2001Journal of Animal Science2001,79,2:1
19Atrazine:Mechanisms of hormonal imbalance in female SD rats显示文摘Chapin R E Stevens J T Hughes C L 1996Funda Appl Toxicol1996,29,:1
20The empirical mode decomposition and the Hilbert spectrum for nonlinear and non-stationary time series analysis 显示文摘 Shen Zheng Steven R L 1998Proc R Soc Lond A1998,454,:1
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