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| 1 | Design of 16S rRNA gene primers for 454 pyrosequencing of the human foregut microbiome显示文摘AIM:To design and validate broad-range 16S rRNA primers for use in high throughput sequencing to classify bacteria isolated from the human foregut microbiome.METHODS:A foregut microbiome dataset was constructed using 16S rRNA gene sequences obtained from oral,esophageal,and gastric microbiomes produced by Sanger sequencing in previous studies represented by 219 bacterial species.Candidate primers evaluated were from the European rRNA database.To assess the effect of sequence length on accuracy of classification,16S rRNA genes of various lengths were created by trimming the full length sequences.Sequences spanning various hypervariable regions were selected to simulate the amplicons that would be obtained using possible primer pairs.The sequences were compared with full length 16S rRNA genes for accuracy in taxonomic classification using online software at the Ribosomal Database Project (RDP).The universality of the primer set was evaluated using the RDP 16S rRNA database which is comprised of 433 306 16S rRNA genes,represented by 36 phyla.RESULTS:Truncation to 100 nucleotides(nt)downstream from the position corresponding to base 28 in the Escherichia coli 16S rRNA gene caused misclassification of 87(39.7%)of the 219 sequences,compared with misclassification of only 29(13.2%)sequences with truncation to 350 nt.Among 350-nt sequence reads within various regions of the 16S rRNA gene,the reverse read of an amplicon generated using the 343F/798R primers had the least(8.2%)effect on classification.In comparison,truncation to 900 nt mimicking single pass Sanger reads misclassified 5.0%of the 219 sequences.The 343F/798R amplicon accurately assigned 91.8%of the 219 sequences at the species level.Weighted by abundance of the species in the esophageal dataset,the 343F/798R amplicon yielded similar classification accuracy without a significant loss in species coverage(92%).Modification of the 343F/798R primers to 347F/803R increased their universality among foregut species.Assuming that a typicalpolymerase chain reaction can tolerate 2 mismatches between a primer and a template,the modified 347F and 803R primers should be able to anneal 98%and 99.6%of all 16S rRNA genes in the RDP database.CONCLUSION:347F/803R is the most suitable pair of primers for classification of foregut 16S rRNA genes but also possess universality suitable for analyses of other complex microbiomes. | Carlos W Nossa William E Oberdorf Jφrn A Aas Bruce J Paster Todd Z DeSantis Eoin L Brodie Daniel Malamud Michael A Poles Zhiheng Pei | 2010 | World Journal of Gastroenterology2010，16，33： | 16 |
| 2 | Nanofluid-based optical filter optimization for PV/T systems显示文摘Optical filters are essential in a wide range of applications,including optical communications,electronics,lighting,optical sensors and photography.This article presents recent work which indicates that optical filters can be created from specialized nanoparticle suspensions.Specifically,this article describes a theoretical optimization process for designing nanofluid-based filters for hybrid solar photovoltaic/thermal(PV/T)applications.This particular application is suitable because nanofluids can be utilized as both volumetric solar absorbers and flowing heat transfer mediums.The nanofluid filters described in this work compare favorably with conventional optical filters for five photovoltaic(PV)cell alternatives:InGaP,CdTe,InGaAs,Si,and Ge.This study demonstrates that nanofluids make efficient,compact and potentially low-cost,spectrally selective optical filters. | Robert A Taylor Todd Otanicar Gary Rosengarten | 2012 | Light(Science & Applications)2012，1，1： | 12 |
| 3 | 动脉瘤性蛛网膜下腔出血患者出血后脑血管痉挛的介入治疗显示文摘本临床实践标准述及动脉瘤性蛛网膜下腔出血患者出血后脑血管痉挛(post—hemorrhagiccerebralvasospasm,PHCV)的介入治疗。这些结论基于神经介入外科学学会的标准委员会的评估,包括使用由美国心脏协会卒中委员会和牛津大学循证医学中心提出的循证医学指南进行的文献回顾。特别关注现有介入治疗方法的安全性和有效性,包括腔内球囊血管成形术(transluminalballoonangioplasty,TBA)和动脉内血管扩张药物输注治疗(intra-arterialvasodilatorinfusiontherapy,IAVT)。评估结果显示,这些侵袭性介入治疗可能有益,并可考虑用于PHCV,如伴有脑缺血症状和最佳的药物治疗无效的患者的治疗。概括起来,IAVT对累及近端和(或)远端颅内脑循环的PHCV可能有益,而TBA则可能对累及近端颅内脑循环的PHCV有益。评估结果显示,对于上述适应证,根据美国心脏协会指南可将TBA和IAVT归为IIb级推荐和B级证据,根据牛津大学循证医学中心指南则可归为4级推荐和C级证据。 | Todd Abruzzo Christopher Moran Kristine A Blacldaam Clifford J Eskey Raisa Lev Philip Meyers Sandra Narayanan Charles Joseph Prestigjacol~ 黄凯滨(译) 吴永明(译) | 2013 | 国际脑血管病杂志2013，21，1： | 4 |
| 4 | Dysfunctional stem and progenitor cells impair fracture healing with age显示文摘Successful fracture healing requires the simultaneous regeneration of both the bone and vasculature;mesenchymal stem cells (MSCs) are directed to replace the bone tissue, while endothelial progenitor cells (EPCs) form the new vasculature that supplies blood to the fracture site. In the elderly, the healing process is slowed, partly due to decreased regenerative function of these stem and progenitor cells. MSCs from older individuals are impaired with regard to cell number, proliferative capacity, ability to migrate, and osteochondrogenic differentiation potential. The proliferation, migration and function of EPCs are also compromised with advanced age. Although the reasons for cellular dysfunction with age are complex and multidimensional, reduced expression of growth factors, accumulation of oxidative damage from reactive oxygen species, and altered signaling of the Sirtuin-1 pathway are contributing factors to aging at the cellular level of both MSCs and EPCs. Because of these geriatric-specific issues, effective treatment for fracture repair may require new therapeutic techniques to restore cellular function. Some suggested directions for potential treatments include cellular therapies, pharmacological agents, treatments targeting age-related molecular mechanisms, and physical therapeutics. Advanced age is the primary risk factor for a fracture, due to the low bone mass and inferior bone quality associated with aging;a better understanding of the dysfunctional behavior of the aging cell will provide a foundation for new treatments to decrease healing time and reduce the development of complications during the extended recovery from fracture healing in the elderly. | Diane R Wagner Sonali Karnik Zachary J Gunderson Jeffery J Nielsen Alanna Fennimore Hunter J Promer Jonathan W Lowery M Terry Loghmani Philip S Low Todd O McKinley Melissa A Kacena Matthias Clauss Jiliang Li | 2019 | World Journal of Stem Cells2019，11，6： | 3 |
| 5 | FUSARIUM-ID v. 1.0: A DNA Sequence Database for Identifying Fusarium显示文摘 | David M. Geiser María del Mar Jiménez-Gasco Seogchan Kang Izabela Makalowska Narayanan Veeraraghavan Todd J. Ward Ning Zhang Gretchen A. Kuldau Kerry O’donnell | 2004 | European Journal of Plant Pathology (-)2004，，5： | 2 |
| 6 | Guidelines for the ultrasound assessment of endothelial-dependent flow-mediated vasodilation of the brachial artery显示文摘 | Mary C Corretti Todd J Anderson Emelia J Benjamin David Celermajer Francois Charbonneau Mark A Creager John Deanfield Helmut Drexler Marie Gerhard-Herman David Herrington Patrick Vallance Joseph Vita Robert Vogel | 2002 | Journal of the American College of Cardiology2002，，： | 2 |
| 7 | Monolithic microfabricated valves and pumps by multilayer soft lithography 显示文摘 | M A Unger H P Choi Todd Thorsen | 2000 | Science2000，288，： | 1 |
| 8 | Captopril: An update of its pharmacodynamic and pharmacokinetic properties, and therapeutic use in hypertension and congestive heart failure显示文摘 | Brogden Rex N Todd Peter A Sorkin Eugene M | 1988 | Drugs1988，36，5： | 1 |
| 9 | Understanding Information Technology Usage:A Test of Competing Models显示文摘 | I Shirley Taylor Perter A Todd | 1995 | Information Systerns Research1995，，6： | 1 |
| 10 | Microsatllites for linkage analysis of genetic traits显示文摘 | Hearne C M Ghosh S Todd J A | 1992 | Trends in Genetic1992，8，： | 1 |
| 11 | Engineering a simple, efficient code generator generator 显示文摘 | CHRISTOPER W F DAVID R H TODD A P | 1992 | ACM Letters on Programming Languages and Systems1992，1，3： | 1 |
| 12 | Complicatons of ERCP 显示文摘 | J Shawn Mallery Todd H Baron Jason A Kom initz | 2003 | American Society For Gastrointestinal Endoscopy2003，57，6： | 1 |
| 13 | Clinical pharmacokinetics of losartan 显示文摘 | DOMENIC A S TODD W B G SIDDHARTHAT G | 2005 | Clin Pharmacokinet2005，44，8： | 1 |
| 14 | Guidelines for Conscious Sedation and Monitoring During Gastrointestinal Endoscopy显示文摘 | J.Patrick Waring Todd H Baron William K Hirota Jay L Goldstein Brian C Jacobson Jonathan A Leighton J.Shawn Mallery Douglas O Faigel | 2003 | Gastrointestinal Endoscopy2003，，3： | 1 |
| 15 | Unrave- ling the Chronic Toxicity of Lead:an Essential Pri- ority for Environmental Health 显示文摘 | Todd A C Wetmur J G Moline J M | 1996 | Environ Health Perspect1996，104，4： | 1 |
| 16 | Direct imaging of single cells and tissue at sub-cellular spatial resolution using transmission geometry MALDI MS 显示文摘 | Zavalin A Todd EM Rawhouser PD | 2012 | J Mass Spectrom2012，47，11： | 1 |
| 17 | Understanding Information Tech- nology Usage : A Test of Competing Models显示文摘 | Tailor S Todd P A | 1995 | Information Sys- tems Research1995，6，2： | 1 |
| 18 | A mathematical model of human semicircular canal geometry:a new basis for interpreting vestibular physiology显示文摘 | BRADSHAW A P CURTHOYS I S TODD M J | 2010 | J Assoc Res Otolaryngol2010，11，： | 1 |
| 19 | Cooperative Comm-unication in Wireless Networks 显示文摘 | ARIA N TODD E HUNTER A | 2004 | IEEE Communications Magazine2004，，10： | 1 |
| 20 | Understanding information technology usage: a test of competing models 显示文摘 | TAYLOR S TODD P A | 1995 | Information Systems Research1995，6，2： | 1 |
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