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131篇 您的检索式:作者名="Maria Williams"
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1Canopy Temperature Depression as a Potential Selection Criterion for Drought Resistance in Wheat显示文摘Field studies were conducted at Bushland, Texas, USA, in 2004 to examine usefulness of canopy temperature depression(CTD), the difference of air-canopy temperature, in screening wheat (Triticum aestivum L.) genotypes for yield underdryland and irrigated. Forty winter wheat genotypes were grown under irrigation and dryland. CTDs were recorded afterheading between 1 330 and 1 530 h on 6 clear days for dryland and 9 days for irrigation. Drought susceptible index (DSI)for each genotype was calculated using mean yield under dryland and irrigated conditions. Genotypes exhibited greatdifferences in CTD under each environment. The dryland CTDs averaged 1.33°C ranging from -0.67 to 2.57°C, and theaverage irrigation CTD were 4.59°C ranging from 3.21 to 5.62°C. A low yield reduction was observed under drylandconditions relative to irrigated conditions for high-CTD genotypes. CTD values were highly negatively correlated withDSI under dryland, and genotypes of CTDs = 1.3°C in dryland condition were identified as drought resistant. For 21genotypes classified as drought resistant by DSI, their CTDs were 1.68°C for dryland and 4.35°C for irrigation on average;for 19 genotypes classified as drought susceptible by DSI, average CTD was 0.94°C in dryland and 4.85°C in irrigation.The high-yield genotypes consistently had high CTD values, and the low-yield ones had low CTD values for allmeasurements in dryland. After heading, genotypes maintained consistent ranking for CTD. Regression results for CTDand yield suggested that the best time for taking CTD measurement was 3-4 weeks after heading in irrigation but any timebefore senescence in dryland. Crop water stress index (CWSI) calculated from CTD data was highly correlated with CWSIcalculated from yield, which suggesting traditional costly CWSI measurement may be improved by using portable infraredthermometers. Most importantly, grain yield was highly correlated with CTD under dryland (R2 = 0.79-0.86) and irrigation(R2 = 0.46-0.58) conditions. These results clearly indicated grain yield and water stress can be predicted by taking CTDvalues in field, which can be used by breeding programs as a potential selection criterion for grain yield and droughtresistance in wheat, but a second study year is needed to confirm further.FAN Ting-lu Maria Balta Jackie Rudd William A Payne 2005Agricultural Sciences in China2005,4,10:35
2冠状动脉内影像学临床应用专家共识(第一部分):对冠状动脉介入治疗的指导与优化显示文摘欧洲心血管介入协会(EAPCI)专家组系统总结了血管内超声(IVUS)和光学相干断层成像(OCT)这两种血管内影像学检查临床应用指征的现有证据,提供了关于IVUS和OCT指导经皮冠状动脉介入治疗(PCI)的应用价值,并明确了最可能从腔内影像学指导的介入治疗中获得临床收益的患者或病变类型,同时详细论述了PCI前如何使用IVUS或OCT优化支架尺寸(支架长度和直径)和手术策略的选择。此外,专家推荐对支架失败(支架内再狭窄或支架内血栓形成)的患者应常规进行冠状动脉内影像学检查,并首选OCT。最后,重点论述了IVUS和OCT在指导PCI和评估支架失败两个方面的优势和局限性,并对未来需要深入研究的领域进行了展望。Lorenz Raber Gary S Mintz Konstantinos C Koskinas Thomas W Johnson Niels R Holm Yoshinubo Onuma Maria D Radu Michael Joner Bo Yu Haibo Jia Nicolas Meneveau Jose M.de la Torre Hemandez Javier Escaned Jonathan Hill Francesco Prati Antonio Colombo Carlo di Mario Evelyn Regar Davide Capodanno William Wijns Robert A Byme Giulio Guagliumi 2019中华心血管病杂志2019,47,1:17
3Regression of cirrhosis during treatment with tenofovir disoproxil fumarate for chronic hepatitis B: a 5-year open-label follow-up study显示文摘Patrick Marcellin Edward Gane Maria Buti Nezam Afdhal William Sievert Ira M Jacobson Mary Kay Washington George Germanidis John F Flaherty Raul Aguilar Schall Jeffrey D Bornstein Kathryn M Kitrinos G Mani Subramanian John G McHutchison E Jenny Heathcote 2012The Lancet2012,,:14
4Expression of von Hippel-Lindau tumor suppressor and tumor-associated carbonic anhydrases IX and XII in normal and neoplastic colorectal mucosa显示文摘AIM: To analyze possible relationships between CA ⅠⅩ/CA Ⅻ and pVHL expression in normal and neoplastic colorectal mucosa.METHODS: Immunohistochemical staining of 42 tissue specimens obtained from 17 cancer patients was performed to evaluate the distribution and semi-quantitatively assess the levels of CA ⅠⅩ, CA Ⅻ and pVHL. VHL mRNAs from 14 fresh-frozen tumors was amplified by RT-PCR and subjected to sequencing. CA9 and CA12 mRNA levels were analyzed by semi-quantitative RT-PCR in comparison with VEGFas an indicator of hypoxia that uncouples the pVHL control.RESULTS: Tumor tissues were associated with a borderline increase of CA ⅠⅩ staining signal and slight but significant decrease of CA Ⅻ immunoreactivity, whereas no association was found for pVHL. Sequence analysis of RT-PCR-amplified VHL mRNAs revealed no deletions/mutations, suggesting that they were VHL-competent. We did not observe any correlation between pVHL and CA ⅠⅩ/CA Ⅻ proteins as well as between VEGF and CA9 mRNAs, but the tumor-associated changes in mRNA levels of VEGF and CA12 showed a significant inverse relationship.CONCLUSION: Our results indicate that CA9 and CA12 are regulated by different intratumoral factors and that lack of apparent relationship between the levels of CA ⅠⅩ/CA Ⅻ and pVHL cannot be fully assigned to uncoupling of negative regulatory function of pVHL by tumor hypoxia signified by induced VEGF transcription. The interplay between the functional pVHL and CA ⅠⅩ/CA Ⅻ in colorectal tumors seems rather complex and is not evident merely at the expression levels.Antti J. Kivela Seppo Parkkila Juha Saarnio Tuomo J. Karttunen Jyrki Kivela Anna-Kaisa Parkkila Maria Bartosova Vojtech Mucha Michal Novak Abdul Waheed William S. Sly Hannu Rajaniemi Silvia Pastorekova Jaromir Pastorek 2005World Journal of Gastroenterology2005,11,17:10
5Lower baseline ALT cut-off values and HBV DNA levels better differentiate HBeAg(-) chronic hepatitis B patients from inactive chronic carriers显示文摘AIM:To determine whether new cut-off values for alanine aminotransferase(ALT)and baseline hepatitis B virus(HBV)DNA levels better differentiate HBeAg(-) chronic hepatitis B(CHB)patients from inactive chronic carriers. METHODS:Ninety-one patients[32 HBeAg(+)CHB, 19 inactive carriers and 40 HBeAg(-)CHB]were followed up for 2 years and were tested for HBV DNA levels by a PCR-based assay.ALT was tested twice during the last 6 mo using new cut-off values:ULN(upper limit of normal)30 IU/L for males,19 IU/L for females. Diagnostic accuracy,sensitivity,specificity,positive and negative predictive values were calculated by discriminant analysis. RESULTS:When using the revised ALT cut-off values, the lowest optimal HBV DNA level that differentiated HBeAg(-)CHB patients from inactive carriers was 50000 copies/mL.The diagnostic accuracy of HBV DNA to determine inactive carriers with a cut-off of 50000 copies/mL was similar to the previously recommended cut-off of 100 000 copies/mL(91%).HBV DNA levels were lower than the cut-off value in 95%of inactive carriers and in 28%of HBeAg(-)CHB patients.With ALT<30 IU/L in men and<19 IU/L in women and HBV DNA levels<100 000 copies/mL,the risk of CHB is 5%.On the other hand,if ALT values were>30 IU in men and>19 IU in women and baseline HBV DNA levels were>100000 copies/mL,the risk is 86%. CONCLUSION:New cut-off values for ALT together with HBV DNA levels proposed by AASLD(American Association for the Study of Liver Diseases)and NIH (National Institute of Health)consensus seem appropriate to characterize inactive carriers.Nimer Assy Zaza Beniashvili Agness Djibre Gattas Nasser Maria Grosovski William Nseir 2009World Journal of Gastroenterology2009,15,24:7
6The HEPD particle detector of the CSES satellite mission for investigating seismo-associated perturbations of the Van Allen belts显示文摘CSES(China Seismo-Electromagnetic Satellite) is a mission developed by CNSA(Chinese National Space Administration) and ASI(Italian Space Agency), to investigate the near-Earth electromagnetic, plasma and particle environment, for studying the seismo-associated disturbances in the ionosphere-magnetosphere transition zone. The anthropogenic and electromagnetic noise,as well as the natural non-seismic electromagnetic emissions is mainly due to tropospheric activity. In particular, the mission aims to confirming the existence of possible temporal correlations between the occurrence of earthquakes for medium and strong magnitude and the observation in space of electromagnetic perturbations, plasma variations and precipitation of bursts with highenergy charged particles from the inner Van Allen belt. In this framework, the high energy particle detector(HEPD) of the CSES mission has been developed by the Italian LIMADOU Collaboration. HEPD is an advanced detector based on a tower of scintillators and a silicon tracker that provides good energy and angular resolution and a wide angular acceptance, for electrons of 3–100 Me V, protons of 30–200 Me V and light nuclei up to the oxygen. CSES satellite has been launched on February 2^(nd), 2018 from the Jiuquan Satellite Launch Center(China).AMBROSI Giovanni BARTOCCI Simona BASARA Laurent BATTISTON Roberto BURGER William J. CARFORA Luca CASTELLINI Guido CIPOLLONE Piero CONTI Livio CONTIN Andrea DE DONATO Cinzia DE SANTIS Cristian FOLLEGA Francesco M. GUANDALINI Cristina IONICA Maria IUPPA Roberto LAURENTI Giuliano LAZZIZZERA Ignazio LOLLI Mauro MANEA Christian MARCELLI Laura MASCIANTONIO Giuseppe MERGE Matteo OSTERIA Giuseppe PACINI Lorenzo PALMA Francesco PALMONARI Federico PANICO Beatrice PATRIZII Laura PERFETTO Francesco PICOZZA Piergiorgio POZZATO Michele PUEL Matteo RASHEVSKAYA Irina RICCI Ester RICCI Marco RICCIARINI Sergio Bruno SCOTTI Valentina SOTGIU Alessando SPARVOLI Roberta SPATARO Bruno VITALE Vincenzo 2018Science China(Technological Sciences)2018,61,5:6
7Stem cell therapy and diabetic erectile dysfunction:A critical review显示文摘Erectile dysfunction(ED)has been identified as one of the most frequent chronic complications of diabetes mellitus(DM).The prevalence of ED is estimated to be about 67.4%in all DM cases worldwide.The pathophysiological process leading to ED involves endothelial,neurological,hormonal,and psychological factors.In DM,endothelial and neurological factors play a crucial role.Damages in the blood vessels and erectile tissue due to insulin resistance are the hallmark of ED in DM.The current treatments for ED include phosphodiesterase-5 inhibitors and penile prosthesis surgery.However,these treatments are limited in terms of just relieving the symptoms,but not resolving the cause of the problem.The use of stem cells for treating ED is currently being studied mostly in experimental animals.The stem cells used are derived from adipose tissue,bone,or human urine.Most of the studies observed an improvement in erectile quality in the experimental animals as well as an improvement in erectile tissue.However,research on stem cell therapy for ED in humans remains to be limited.Nevertheless,significant findings from studies using animal models indicate a potential use of stem cells in the treatment of ED.Cennikon Pakpahan Raditya Ibrahim William William Zakiyatul Faizah Juniastuti Juniastuti Maria I Lusida Delvac Oceandy 2021World Journal of Stem Cells2021,13,10:6
8Bisphenol A exposure alters release of immune and developmental modulators and expression of estrogen receptors in human fetal lung fibroblasts显示文摘Bisphenol A(BPA) has been shown to exert biological effects through estrogen receptor(ER)-dependent and ER-independent mechanisms. Recent studies suggest that prenatal exposure to BPA may increase the risk of childhood asthma. To investigate the underlying mechanisms in the actions of BPA, human fetal lung fibroblasts(h FLFs) were exposed to varying doses of BPA in culture for 24 hr. Effects of BPA on localization and uptake of BPA,cell viability, release of immune and developmental modulators, cellular localization and expression of ERα, ERβ and G-protein coupled estrogen receptor 30(GPR30), and effects of ERs antagonists on BPA-induced changes in endothelin-1(ET-1) release were examined.BPA at 0.01–100 μmol/L caused no changes in cell viability after 24 hr of exposure. h FLFs expresses all three ERs. BPA had no effects on either cellular distribution or protein expression of ERα, however, at 100 μmol/L(or 23 μmol/L intracellular BPA) increased ERβprotein levels in the cytoplasmic fractions and GPR 30 protein levels in the nuclear fractions.These paralleled with increased release of growth differentiation factor-15, decreased phosphorylation of nuclear factor kappa B p65 at serine 536, and decreased release of ET-1,interleukin-6, and interferon gamma-induced protein 10. ERs antagonists had no effects on BPA-induced decrease in ET-1 release. These data suggest that BPA at 100 μmol/L altered the release of immune and developmental modulators in h FLFs, which may negatively influence fetal lung development, maturation, and susceptibility to environmental stressors, although the role of BPA in childhood asthma remains to be confirmed in in vivo studies.Laziyan Mahemuti Qixuan Chen Melanie C. Coughlan Min Zhang Maria Florian Ryan J Mailloux Xu-Liang Cao Kylie A. Scoggan William G. Willmore Xiaolei Jin 2016Journal of Environmental Sciences2016,28,10:3
9An Optical Coherence Tomography-Guided, Variable Dosing Regimen with Intravitreal Ranibizumab (Lucentis) for Neovascular Age-related Macular Degeneration显示文摘Anne E. Fung Geeta A. Lalwani Philip J. Rosenfeld Sander R. Dubovy Stephan Michels William J. Feuer Carmen A. Puliafito Janet L. Davis Harry W. Flynn Maria Esquiabro 2007American Journal of Ophthalmology2007,,4:3
10Physiological Assessment of Coronary Artery Disease in the Cardiac Catheterization Laboratory: A Scientific Statement From the American Heart Association Committee on Diagnostic and Interventional Cardiac Catheterization, Council on Clinical Cardiology显示文摘Morton J. Kern Amir Lerman Jan-Willen Bech Bernard De Bruyne Eric Eeckhout William F. Fearon Stuart T. Higano Michael J. Lim Martijn Meuwissen Jan J. Piek Nico H.J. Pijls Maria Siebes Jos A.E. Spaan 2006Circulation2006,,12:3
11Undernutrition, risk of malnutrition and obesity in gastroenterological patients: A multicenter study显示文摘AIM: To investigate the prevalence of undernutrition, risk of malnutrition and obesity in the Italian gastroenterological population. METHODS: The Italian Hospital Gastroenterology Association conducted an observational, cross-sectional multicenter study. Weight, weight loss, and body mass index were evaluated. Undernutrition was defined as unintentional weight loss > 10% in the last threesix months. Values of Malnutrition Universal Screening Tool(MUST) > 2, NRS-2002 > 3, and Mini Nutritional Assessment(MNA) from 17 to 25 identified risk of malnutrition in outpatients, inpatients and elderly patients, respectively. A body mass index ≥ 30 indicated obesity. Gastrointestinal pathologies were categorized into acute, chronic and neoplastic diseases. RESULTS: A total of 513 patients participated in the study. The prevalence of undernutrition was 4.6% in outpatients and 19.6% in inpatients. Moreover, undernutrition was present in 4.3% of the gastrointestinal patients with chronic disease, 11.0% of those with acute disease, and 17.6% of those with cancer. The risk of malnutrition increased progressively and significantly in chronic, acute and neoplastic gastrointestinal diseases in inpatients and the elderly population. Logistical regression analysis confirmed that cancer was a risk factor for undernutrition(OR = 2.7; 95%CI: 1.2-6.44, P = 0.02). Obesity and overweight were more frequent in outpatients. CONCLUSION: More than 63% of outpatients and 80% of inpatients in gastroenterological centers suffered from significant changes in body composition and required specific nutritional competence and treatment.Massimiliano Rizzi Silvia Mazzuoli Nunzia Regano Rosa Inguaggiato Margherita Bianco Gioacchino Leandro Elisabetta Bugianesi Donatella Noè Nicoletta Orzes Paolo Pallini Maria Letizia Petroni Gianni Testino Francesco William Guglielmi 2016World Journal of Gastrointestinal Oncology2016,8,7:2
12Development and Optimization of an Alternative Methodology for Detection of Milk Adulteration by Water显示文摘Wesley William Gongalves Nascimento Marcone Augusto Leal de Oliveira1 Marcone Augusto Leal de Oliveira Marco Antonio Moreira Furtado Virgilio de Carvalho dos Anjos Maria Jose Valenzuela Bell 2013Journal of Food Science and Engineering2013,3,7:2
13抑郁症的非药物治疗:系统性综述与证据图显示文摘背景抑郁症非药物治疗的疗效比较目前仍然不清楚。方法我们对一些系统性综述作了概述,回顾了随机对照试验(RCT),比较抑郁症非药物治疗的有效性和认知行为治疗(CBT)。对多个电子数据库在2016年2月之前发表的所有文献进行了检索,不限制语言。成对的评阅人进行资料纳入、数据提炼并评估偏倚的风险。在适用的时候进行了荟萃分析。结果我们收录了367项RCT,纳入了约2000名患者,进行了11种治疗,导出17项独立的头对头比较。通过标准化的量表评估,发现CBT、自然疗法、行为干预与躯体活动干预可以降低抑郁的严重程度。然而,这些非药物干预的相对疗效仍然缺乏。这些干预对临床缓解和复发的效果不清楚。CBT的发生率比抗抑郁药物更低。局限性由于证据缺乏一致性、证据不清或偏倚风险高,导致证据的质量只是低到中等,限制了我们研究结果的可信度。结论抑郁症的非药物治疗能减少抑郁症状,在轻度到重度抑郁症患者中,应当合并抗抑郁药物治疗,一同进行。对于非药物治疗的选择,应当根据患者的价值观、偏好、临床和社会因素来与患者共同作出决定。Wigdan H Farah Mouaz Alsawas Maria Mainou Fares Alahdab Magdoleen H Farah Ahmed T Ahmed Essa A Mohamed Jehad Almasri Michael R Gionfriddo Ana Castaneda-Guarderas Khaled Mohammed Zhen Wang Noor Asi Craig N Sawchuk Mark D Williams Larry J Prokop M Hassan Murad Annie LeBlanc 2017英国医学杂志中文版2017,20,11:2
14Clonal growth and serial propagation of rat esophageal epithelial cells显示文摘Merrill S. Babcock Maria R. Marino William T. Gunning Gary D. Stoner 1983In Vitro1983,,5:2
15The diagnosis of dementia due to Alzheimer’s disease: Recommendations from the National Institute on Aging-Alzheimer’s Association workgroups on diagnostic guidelines for Alzheimer’s disease显示文摘Guy M. McKhann David S. Knopman Howard Chertkow Bradley T. Hyman Clifford R. Jack Claudia H. Kawas William E. Klunk Walter J. Koroshetz Jennifer J. Manly Richard Mayeux Richard C. Mohs John C. Morris Martin N. Rossor Philip Scheltens Maria C. Carrillo Bil 2011Alzheimer’s & Dementia: The Journal of the Alzheimer’s Association2011,,3:2
16Whole brain radiation therapy with or without stereotactic radiosurgery boost for patients with one to three brain metastases: phase III results of the RTOG 9508 randomised trial显示文摘David W Andrews Charles B Scott Paul W Sperduto Adam E Flanders Laurie E Gaspar Michael C Schell Maria Werner-Wasik William Demas Janice Ryu Jean-Paul Bahary Luis Souhami Marvin Rotman Minesh P Mehta Walter J Curran 2004The Lancet . 2004 (9422)2004,,9422:2
17Role of Inflammation in the Development of Renal Damage and Dysfunction in Angiotensin II–Induced Hypertension显示文摘Tang-Dong Liao Xiao-Ping Yang Yun-He Liu Edward G. Shesely Maria A. Cavasin William A. Kuziel Patrick J. Pagano Oscar A. Carretero 2008Hypertension2008,,2:2
18Predicted Effects of Treatment for HCV Infection Vary Among European Countries显示文摘Sylvie Deuffic–Burban Pierre Deltenre Maria Buti Tommaso Stroffolini Julie Parkes Nikolai Mühlberger Uwe Siebert Christophe Moreno Angelos Hatzakis William Rosenberg Stefan Zeuzem Philippe Mathurin 2012Gastroenterology2012,,4:2
19Characteristics and outcomes of patients hospitalized for heart failure in the United States: Rationale, design, and preliminary observations from the first 100,000 cases in the Acute Decompensated Heart Failure National Registry (ADHERE)显示文摘Kirkwood F. Adams Gregg C. Fonarow Charles L. Emerman Thierry H. LeJemtel Maria Rosa Costanzo William T. Abraham Robert L. Berkowitz Marie Galvao Darlene P. Horton 2005American Heart Journal2005,,2:2
20Effects of Vedolizumab Induction Therapy for Patients With Crohn’s Disease in Whom Tumor Necrosis Factor Antagonist Treatment Had Failed显示文摘Bruce E. Sands Brian G. Feagan Paul Rutgeerts Jean-Frédéric Colombel William J. Sandborn Richmond Sy Geert D’Haens Shomron Ben-Horin Jing Xu Maria Rosario Irving Fox Asit Parikh Catherine Milch Stephen Hanauer 2014Gastroenterology2014,,:2
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