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248篇 您的检索式:作者名="Jeffrey L A"
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1Placental accommodations for transport and metabolism during intra-uterine crowding in pigs显示文摘Litter size and birth weights are limited by uterine capacity, defined as the ability of the uterus to maintain the appropriate development of some number of conceptuses. Uterine capacity is the result of the combined effects of uterine, placental and embryo/fetal function. The number of living conceptuses that the uterus is capable of supporting is greater during early gestation compared to later gestation. Plots of log fetal weight versus log placental weight also indicate that fetal weights are less sensitive to reduced placental weight(and therefore reduced intrauterine space) in early gestation compared to late gestation. However, even in late gestation,mechanisms still exist that maintain fetal growth when the size of the placenta is reduced. One such mechanism is likely to be improved development of the folded placental-epithelial/maternal-epithelial bilayer. Fold depth, and therefore the maternal fetal interactive surface, increases as gestation advances and is greater in placenta from small fetuses. On the fetal side of the placenta, the epithelial bilayer is embedded in stromal tissue. Glycosaminoglycans are major components of stroma, including hyaluronan and heparan sulfate. Hyaluronidases and heparanases are present within placental tissues, and likely play roles in modification of stromal components to facilitate fold development. Glycosaminoglycans are polymers of forms of glucose(glucosamine, glucuronic acid, iduronic acid)suggesting that glycosaminoglycan synthesis may compete with the glucose needs of the developing fetus.Pig conceptuses are fructogenic, such that a substantial portion of glucose transferred from mother to fetus is converted to fructose. Fructose is an intermediate product in the synthesis of glucosamine from glucose, and glucosamine is linked to regulation of trophoblast cell proliferation through regulation of m TOR. These findings suggest a link between glucose, fructose, glucosamine synthesis, GAG production, and placental morphogenesis,but the details of these interactions remain unclear. In addition, recent placental epithelial transcriptome analysis identified several glucose, amino acid, lipid, vitamin, mineral and hormone transporter mechanisms within the placenta. Further elucidation of mechanisms of placental morphogenesis and solute transport could provide clues to improving nutrient transport to the pig fetus, potentially increasing litter size and piglet birth weights.Jeffrey L Vallet Anthony K Mc Neel Jeremy R Miles Bradley A Freking 2015Journal of Animal Science and Biotechnology2015,6,2:5
2Nat 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
3Risk for emerging bipolar disorder, variants, and symptoms in children with attention deficit hyperactivity disorder, now grown up显示文摘AIM: To determine the prevalence of bipolar disorder(BD) and sub-threshold symptoms in children with attention deficit hyperactivity disorder(ADHD) through 14 years' follow-up, when participants were between 21-24 years old.METHODS: First, we examined rates of BD type Ⅰ?and Ⅱ diagnoses in youth participating in the NIMH-funded Multimodal Treatment Study of ADHD(MTA). We used the diagnostic interview schedule for children(DISC), administered to both parents(DISC-P) and youth(DISCY). We compared the MTA study subjects with ADHD(n = 579) to a local normative comparison group(LNCG, n = 289) at 4 different assessment points: 6, 8, 12, and 14 years of follow-ups. To evaluate the bipolar variants, we compared total symptom counts(TSC) of DSM manic and hypomanic symptoms that were generated by DISC in ADHD and LNCG subjects. Then we sub-divided the TSC into pathognomonic manic(PM) and non-specific manic(NSM) symptoms. We compared the PM and NSM in ADHD and LNCG at each assessment point and over time. We also evaluated the irritability as category A2 manic symptom in both groups and over time. Finally, we studied the irritability symptom in correlation with PM and NSM in ADHD and LNCG subjects.RESULTS: DISC-generated BD diagnosis did not differ significantly in rates between ADHD(1.89%) and LNCG 1.38%). Interestingly, no participant met BD diagnosis more than once in the 4 assessment points in 14 years. However, on the symptom level, ADHD subjects reported significantly higher mean TSC scores: ADHD 3.0; LNCG 1.7; P < 0.001. ADHD status was associated with higher mean NSM: ADHD 2.0 vs LNCG 1.1; P < 0.0001. Also, ADHD subjects had higher PM symptoms than LNCG, with PM means over all time points of 1.3 ADHD; 0.9 LNCG; P = 0.0001. Examining both NSM and PM, ADHD status associated with greater NSM than PM. However, Over 14 years, the NSM symptoms declined and changed to PM over time(df 3, 2523; F = 20.1; P < 0.0001). Finally, Irritability(BD DSM criterion-A2) rates were significantly higher in ADHD than LNCG(χ2 = 122.2, P < 0.0001), but irritability was associated more strongly with NSM than PM(df 3, 2538; F = 43.2; P < 0.0001).CONCLUSION: Individuals with ADHD do not appear to be at significantly greater risk for developing BD, but do show higher rates of BD symptoms, especially NSM. The greater linkage of irritability to NSM than to PM suggests caution when making BD diagnoses based on irritability alone as one of 2(A-level) symptoms for BD diagnosis, particularly in view of its frequent presentation with other psychopathologies.Ahmed Z Elmaadawi Peter S Jensen L Eugene Arnold Brooke SG Molina Lily Hechtman Howard B Abikoff Stephen P Hinshaw Jeffrey H Newcorn Laurence Lee Greenhill James M Swanson Cathryn A Galanter 2015World Journal of Psychiatry2015,5,4:3
4A randomized, double blind study of interleukin 10 for the prevention of ERCP-induced pancreatitis显示文摘John A Dumot Darwin L Conwell Gregory Zuccaro John J Vargo Steven S Shay Kirk A Easley Jeffrey L Ponsky 2001The American Journal of Gastroenterology2001,,7:2
5Toxicity of Benzotriazole and Benzotriazole Derivatives to Three Aquatic Species显示文摘David A Pillard Jeffrey S Cornell Doree L DuFresne Mark T Hernandez 2000Water Research2000,,2:2
6D-MELD risk capping improves post-transplant and overall mortality under markov microsimulation显示文摘AIM: To hypothesize that the product of calculated Model for End-Stage Liver Disease score excluding exception points and donor age(D-MELD) risk capping ± Rule 14 could improve post liver transplant and overall survival after listing.METHODS: Probabilities derived from the United Network for Organ Sharing database between 2002 and 2004 were used to simulate potential outcomes for all patients listed for transplantation. The Markov simula-tion was then modified by screening matches using a 1200 or 1600 D-MELD risk cap ± allowing transplants for Model for End-Stage Liver Disease(MELD) ≤ 14(Rule 14). The differential impact of the rule changes was assessed.RESULTS: The Markov simulation accurately reproduced overall and post transplant survival. A 1200 D-MELD risk cap improved post-transplant survival. Both the 1200 and 1600 risk caps improved overall survival for waitlisted patients. The addition of Rule 14 further improved post transplant and overall survival by redistribution of donor livers to recipients in higher MELD subgroups. The mechanism for improved overall and post-transplant survival after listing was due to shifting a larger percentage of transplants to the moderate MELD score subgroup(MELD 15-29) while also ensuring that high MELD recipients have livers of high quality to achieve excellent post transplant survival.CONCLUSION: A 1200 D-MELD risk cap + Rule 14 provided the greatest overall benefit primarily by focusing liver transplantation towards the moderate MELD recipient.Jeffrey B Halldorson Robert L Carithers Jr Renuka Bhattacharya Ramasamy Bakthavatsalam Iris W Liou Andre A Dick Jorge D Reyes James D Perkins 2014World Journal of Transplantation2014,4,3:2
7Obesity and cardiometabolic disease risk factors among US adolescents with disabilities显示文摘AIM: To generate prevalence estimates of weight status and cardiometabolic disease risk factors among adolescents with and without disabilities.METHODS: Analysis of the 1999-2010 National Health and Nutrition Examination Survey data was conducted among 12-18 years old with(n = 256) and without disabilities(n = 5020). Mean values of waist circumference, fasting glucose, high-density-lipoprotein cholesterol, triglycerides, systolic and diastolic blood pressure and metabolic syndrome(Met S, ≥ 3 risk factors present) were examined by the following standardized body mass index(BMI) categories for those with and without disabilities; overweight(BMI ≥ 85th- < 95 th percentile for age and sex), obesity(BMI ≥ 95 th percentile) and severe obesity(BMI ≥35 kg/m2). Linear regression models were fit with each cardiometabolic disease risk factor independently as continuous outcomes to show relationships with disability status. RESULTS: Adolescents with disabilities were significantlymore likely to be overweight(49.3%), obese(27.6%) and severely obese(12%) vs their peers without disabilities(33.1%, 17.5% and 3.6%, respectively, P ≤ 0.01 for all). A higher proportion of overweight, obese and severely obese children with disabilities had abnormal SBP, fasting lipids and glucose as well as Met S(18.9% of overweight, 32.3% of obese, 55% of severely obese) vs their peers without disabilities(9.7%, 16.8%, 36.3%, respectively). US adolescents with disabilities are over three times as likely to have Met S(OR = 3.45, 95%CI: 1.08-10.99, P = 0.03) vs their peers with no disabilities.CONCLUSION: Results show that adolescents with disabilities are disproportionately affected by obesity and poor cardiometabolic health vs their peers with no disabilities. Health care professionals should monitor the cardiometabolic health of adolescents with disabilities.Sarah E Messiah Denise C Vidot Gabriel Somarriba Kanathy Haney Semra Aytur Ruby A Natale Jeffrey P Brosco Kristopher L Arheart 2015World Journal of Diabetes2015,6,1:2
8An exploratory cross-country comparison of strategic purchasing 显示文摘Jeffrey A Ogden Christian L Rossetti 2007Journal of Purchasing and Supply Management2007,13,1:1
9Identifying and assessing ecotourism visitor impacts at eight protected areas in Costa Rica and Belize显示文摘Tracy A Farrell Jeffrey L Marion 2001Environment Conservation2001,28,3:1
10MRI features of mucosa-associated lymphoid tissue lymphoma in the breast显示文摘ESPINOSA L A DANIEL B L JEFFREY S S 0,,01:1
11Extending Reperfusion Therapy for Acute Ischemic Stroke显示文摘Carlos A Jeffrey L 2005Stroke2005,36,10:1
12Extending Reperfusion Therapy for Acute Ischemic Stroke显示文摘Carlos A Jeffrey L 2005Stroke2005,36,10:1
13Activity and safety of crizotinib in patients with ALK -positive non-small-cell lung cancer: updated results from a phase 1 study显示文摘D Ross Camidge Yung-Jue Bang Eunice L Kwak A John Iafrate Marileila Varella-Garcia Stephen B Fox Gregory J Riely Benjamin Solomon Sai-Hong I Ou Dong-Wan Kim Ravi Salgia Panagiotis Fidias Jeffrey A Engelman Leena Gandhi Pasi A J?nne Daniel B Costa Geoffrey 2012Lancet Oncology2012,,10:1
14x-Bond anisotropy and C - D??? Q hydrogen bonding in the crystal structure of deuterionitromethane显示文摘Jeffrey G A Ruble] R Wingert L M 1985J Am Chern Soc1985,107,:1
15Over-expression of sphingosinekinase-1 enhances a progenitor phenotype in humanendothelial cells显示文摘Barrett Jeffrey M Parham Kate A Pippal Jyotsna B CockshellMichaelia P Moretti Paul A B Brice Sarah L Pitson StuartM Bonder Claudine S 2011Microcirculation2011,187,:1
16Mercury in coal and the impact of coal quality on mercury emissions from combustion system 显示文摘Kolker A Constance L S Jeffrey C Q 2006Applied Geochemistry2006,21,11:1
17A pharmacokinetic study of occupational and environmental benzene exposure with regard to gender显示文摘Elizabeth A Brown Michael L Shelley Jeffrey W Fisher 1998Risk Analysis1998,18,2:1
18Role of Streptococcus thermophilus MR-1C Capsular Exopolysaccharide in Cheese Moisture retention显示文摘DEBORAH L JEFFREY A AHLGREN D H 1998Appl Environ Microbiol1998,64,6:1
19Convergence properties of the Nelder-Mead simplex method in low dimensions显示文摘 JAMES A R MARGARET H W PAUL E W 1998SIAM Journal of Optimization1998,9,1:1
20Ensemble Square Root Filters显示文摘Michael K T Jeffrey L A Craig H B 2002Notes and Correspondence2002,25,6:1
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