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| 1 | Diagnostic accuracy of endoscopic ultrasound in pancreatic neuroendocrine tumors: A systematic review and meta analysis显示文摘AIM: To detect pancreatic neuroendocrine tumors (PNETs) has been varied. This study is undertaken to evaluate the accuracy of endoscopic ultrasound (EUS) in detecting PNETs.METHODS: Only EUS studies confirmed by surgery or appropriate follow-up were selected. Articles were searched in Medline, Ovid journals, Medline nonindexed citations, and Cochrane Central Register of Controlled Trials and Database of Systematic Reviews. Pooling was conducted by both fixed and random effects model). RESULTS: Initial search identified 2610 reference articles, of these 140 relevant articles were selected and reviewed. Data was extracted from 13 studies (n = 456) which met the inclusion criteria. Pooled sensitivity of EUS in detecting a PNETs was 87.2% (95%CI: 82.2-91.2). EUS had a pooled specificity of 98.0% (95%CI: 94.3-99.6). The positive likelihood ratio of EUS was 11.1 (95%CI: 5.34-22.8) and negative likelihood ratio was 0.17 (95%CI: 0.13-0.24). The diagnostic odds ratio, the odds of having anatomic PNETs in positive as compared to negative EUS studies was 94.7 (95%CI: 37.9-236.1). Begg-Mazumdar bias indicator for publication bias gave a Kendall's tau value of 0.31 (P = 0.16), indication no publication bias. The P for χ2 heterogeneity for all the pooled accuracy estimates was > 0.10. CONCLUSION: EUS has excellent sensitivity and specificity to detect PNETs. EUS should be strongly considered for evaluation of PNETs. | Srinivas R Puli Nikhil Kalva Matthew L Bechtold Smitha R Pamulaparthy Micheal D Cashman Norman C Estes Richard H Pearl Fritz-Henry Volmar Sonu Dillon Michael F Shekleton David Forcione | 2013 | World Journal of Gastroenterology2013，19，23： | 14 |
| 2 | Immunogenetic factors driving formation of ultralong VH CDR3 in Bos taurus antibodies显示文摘The antibody repertoire of Bos taurus is characterized by a subset of variable heavy(VH)chain regions with ultralong third complementarity determining regions(CDR3)which,compared to other species,can provide a potent response to challenging antigens like HIV env.These unusual CDR3 can range to over seventy highly diverse amino acids in length and form uniqueβ-ribbon‘stalk’and disulfide bonded‘knob’structures,far from the typical antigen binding site.The genetic components and processes for forming these unusual cattle antibody VH CDR3 are not well understood.Here we analyze sequences of Bos taurus antibody VH domains and find that the subset with ultralong CDR3 exclusively uses a single variable gene,IGHV1-7(VHBUL)rearranged to the longest diversity gene,IGHD8-2.An eight nucleotide duplication at the 3′end of IGHV1-7 encodes a longer V-region producing an extended Fβ-strand that contributes to the stalk in a rearranged CDR3.A low amino acid variability was observed in CDR1 and CDR2,suggesting that antigen binding for this subset most likely only depends on the CDR3.Importantly a novel,potentially AID mediated,deletional diversification mechanism of the B.taurus VH ultralong CDR3 knob was discovered,in which interior codons of the IGHD8-2 region are removed while maintaining integral structural components of the knob and descending strand of the stalk in place.These deletions serve to further diversify cysteine positions,and thus disulfide bonded loops.Hence,both germline and somatic genetic factors and processes appear to be involved in diversification of this structurally unusual cattle VH ultralong CDR3 repertoire. | Thaddeus C Deiss Melissa Vadnais Feng Wang Patricia L Chen Ali Torkamani Waithaka Mwangi Marie-Paule Lefranc Michael F Criscitiello Vaughn V Smider | 2019 | Cellular & Molecular Immunology2019，16，1： | 4 |
| 3 | Nat 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 |
| 4 | Comparative effectiveness of i-SCAN^(TM) and high-definition white light characterizing small colonic polyps显示文摘AIM:To evaluate accuracy of in vivo diagnosis of adenomatous vs non-adenomatous polyps using i-SCAN digital chromoendoscopy compared with high-definition white light.METHODS:This is a single-center comparative effectiveness pilot study.Polyps(n = 103) from 75 averagerisk adult outpatients undergoing screening or surveillance colonoscopy between December 1,2010 and April 1,2011 were evaluated by two participating endoscopists in an academic outpatient endoscopy center.Polyps were evaluated both with high-definition white light and with i-SCAN to make an in vivo prediction of adenomatous vs non-adenomatous pathology.We determined diagnostic characteristics of i-SCAN and highdefinition white light,including sensitivity,specificity,and accuracy,with regards to identifying adenomatous vs non-adenomatous polyps.Histopathologic diagnosis was the gold standard comparison.RESULTS:One hundred and three small polyps,detected from forty-three patients,were included in the analysis.The average size of the polyps evaluated in the analysis was 3.7 mm(SD 1.3 mm,range 2 mm to 8 mm).Formal histopathology revealed that 54/103(52.4%) were adenomas,26/103(25.2%) were hyperplastic,and 23/103(22.3%) were other diagnoses include 'lymphoid aggregates','non-specific colitis,' and 'no pathologic diagnosis.' Overall,the combined accuracy of endoscopists for predicting adenomas was identical between i-SCAN(71.8%,95%CI:62.1%-80.3%) and high-definition white light(71.8%,95%CI:62.1%-80.3%).However,the accuracy of each endoscopist differed substantially,where endoscopist A demonstrated 63.0% overall accuracy(95%CI:50.9%-74.0%) as compared with endoscopist B demonstrating 93.3% overall accuracy(95%CI:77.9%-99.2%),irrespective of imaging modality.Neither endoscopist demonstrated a significant learning effect with i-SCAN during the study.Though endoscopist A increased accuracy using i-SCAN from 59%(95%CI:42.1%-74.4%) in the first half to 67.6%(95%CI:49.5%-82.6%) in the second half,and endoscopist B decreased accuracy using i-SCAN from 100%(95%CI:80.5%-100.0%) in the first half to 84.6%(95%CI:54.6%-98.1%) in the second half,neither of these differences were statistically significant.CONCLUSION:i-SCAN and high-definition white light had similar efficacy predicting polyp histology.Endoscopist training likely plays a critical role in diagnostic test characteristics and deserves further study. | Johanna L Chan Li Lin Michael Feiler Andrew I Wolf Diana M Cardona Ziad F Gellad | 2012 | World Journal of Gastroenterology2012，18，41： | 3 |
| 5 | Fondaparinux预防老年急性内科患者发生静脉血栓形成的效果与安全性:随机安慰剂对照研究显示文摘目的:观察 Fondaparinux 对具有中高度静脉血栓发生危险的老年急性内科住院患者的抗凝效果与安全性。设计:双盲随机安慰剂对照研究。背景:8个国家的35个中心。参与者:849例≥60岁内科患者,住院原因分别为充血性心力衰竭、慢性肺病合并急性呼吸系统疾患、急性炎症性或感染性疾病,预期至少住院4天以上。干预:2.5 mg Fondaparinux 或安慰剂,每天1次皮下注射,持续6~14天。观察指标:主要指标为静脉血栓形成(治疗后15天内采用双侧静脉造影检查)及有症状的静脉血栓;次要指标为死亡与出血。患者随访时间为1个月。结果:Fondaparinux 治疗组425例患者和安慰剂组414例患者接受了安全性分析(10例未治疗)。644例患者(75.9%)可接受主要指标分析。静脉血栓检出率在 Fondaparinux 治疗组为5.6%(18/321),安慰剂组为10.5%(34/323),相对危险减少46.7%(95% CI 7.7%~69.3%)。安慰剂组5例患者发生有症状的静脉血栓,Fondaparinux治疗组无患者发生有症状的静脉血栓(P=0.029)。两组均有1例(0.2%)患者发生严重出血。随访结束时,安慰剂组、Fondaparinux 治疗组分别死亡25(6.0%)、14(3.3%)例患者。结论:Fondaparinux 可有效预防急性内科老年患者无症状性及有症状的静脉血栓。严重出血几率两组相似。 | Alexander T Cohen Bruce L Davidson Alexander S Gallus Michael R Lassen Martin H Prins Witold Tomkowski Alexander G G Turpie Jan F M Egberts Anthonie W A Lensing 石汉平(译) 王深明(校) | 2006 | 英国医学杂志中文版2006，9，5： | 3 |
| 6 | Surgical management of osteonecrosis of the femoral head in patients with sickle cell disease显示文摘Sickle cell disease is a known risk factor for osteonecrosis of the hip.Necrosis within the femoral head may cause severe pain,functional limitations,and compromise quality of life in this patient population.Early stages of avascular necrosis of the hip may be managed surgically with core decompression with or without autologous bone grafting.Total hip arthroplasty is the mainstay of treatment of advanced stages of the disease in patients who have intractable pain and are medically fit to undergo the procedure.The management of hip pathology in sickle cell disease presents numerous medical and surgical challenges,and the careful perioperative management of patients is mandatory.Although there is an increased risk of medical and surgical complications in patients with sickle cell disease,total hip arthroplasty can provide substantial relief of pain and improvement of function in the appropriately selected patient. | Atul F Kamath Michael H McGraw Craig L Israelite | 2015 | World Journal of Orthopedics2015，6，10： | 2 |
| 7 | Reduced striatal volumes in Parkinson’s disease:a magnetic resonance imaging study显示文摘Background:The presence and extent of structural changes in the brain as a consequence of Parkinson’s disease(PD)is still poorly understood.Methods:High-resolution 3-tesla T1-weighted structural magnetic resonance images in sixty-five PD and 27 age-matched healthy control participants were examined.Putamen,caudate,and intracranial volumes were manually traced in the axial plane of 3D reconstructed images.Striatal nuclei volumes were normalized to intracranial volume for statistical comparison.Disease status was assessed using the Unified Parkinson’s Disease Rating Scale and Hoehn and Yahr scale.Cognitive status was assessed using global status tests and detailed neuropsychological testing.Results:Both caudate and putamen volumes were smaller in PD brains compared to controls after adjusting for age and gender.Caudate volumes were reduced by 11%(p=0.001)and putamen volumes by 8.1%(p=0.025).PD striatal volumes were not found to be significantly correlated with cognitive or motor decline.Conclusion:Small,but significant reductions in the volume of both the caudate and putamen occur in PD brains.These reductions are independent of the effects of age and gender,however the relation of these reductions to the functional loss of dopamine,which is characteristic of PD,remains unclear. | Toni L Pitcher Tracy R Melzer Michael R MacAskill Charlotte F Graham Leslie Livingston Ross J Keenan Richard Watts John C Dalrymple-Alford Tim J Anderson | 2012 | Translational Neurodegeneration2012，1，1： | 2 |
| 8 | Pentoxifylline treatment and penile calcifications in men Nith Peyronie's disease显示文摘 | James F Smith Alan W Shindel Yun-Ching Huang Raul I Clavijo Lawrence Flechner Benjamin N Breyer Michael L Eisenberg Tom F Lue | 2011 | Asian Journal of Andrology2011，13，2： | 2 |
| 9 | Regulation of calcium sparks and spontaneous transient outward currents by RyR3 in arterial vascular smooth muscle cells显示文摘 | Matthias L Wolfgang J Michael F | 2001 | Circ Res2001，89，： | 1 |
| 10 | HIPI and HIPlr stabilize receptor tyrosine kinases and bind 3-phosphoinositides via epsin N-terminal homology domains显示文摘 | Hyun T S Rao D S Saint-Dic D Michael L E Kumar P D Bradley S V Mizukami I F | | 0，，14： | 1 |
| 11 | Bacterial 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 | 2008 | Plant Physiology2008，147，2： | 1 |
| 12 | Thomashow 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 | 2001 | Plant Plzysiology2001，127，3： | 1 |
| 13 | Competing models of entrepreneurial intentions显示文摘 | Krueger J R Norris F Reilly Michael D and Carsrud Alan L | 2000 | Journal of Business Venturing2000，15，56： | 1 |
| 14 | Increase glutathione hiosynthesis plays a role in nickel tolerance in thlaspi nickel hyperaecumulas显示文摘 | John L F Michael W P Ken N | 2004 | The Plant Cell2004，16，： | 1 |
| 15 | Vasopressin: a new target for the treatment of heart failure显示文摘 | Craig R Lee Michael L Watkins J.Herbert Patterson Wendy Gattis Christopher M O'Connor Mihai Gheorghiade Kirkwood F Adams | 2003 | American Heart Journal2003，，1： | 1 |
| 16 | Ob- structive sleep apnea is associated with increased urinary albumin excertion显示文摘 | MICHAEL D F AMY S I KIRCHNER H L | 2007 | Sleep2007，30，7： | 1 |
| 17 | Modification of carbohydrate content in developing tomato fruit显示文摘 | Ilan L Moshe B Michael F | 1999 | Hortscience1999，34，6： | 1 |
| 18 | Understanding the effect of surfactant aggregation on corrosion inhibition of mild steel in acidic medium显示文摘 | Michael L F | 2002 | Corrosion Science2002，44，12： | 1 |
| 19 | From 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 |
| 20 | Liver-specific dene expression in cultured human hepmatopoietic stem cell显示文摘 | HENNING C F MICHAEL V L LOURDES C D | 2003 | Stem Cells2003，21，： | 1 |
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