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Feasibility study of phase-sensitive imaging based on multiple reference optical coherence tomography

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Chinese Optics Letters 2017年第9期15卷 25-30页

作者： Roshan Dsouza Hrebesh Subhash Kai Neuhaus Paul M.McNamara j.sh hogan Carol Wilson Martin j.Leahy Tissue Optics and Microcirculation Imaging Group School of PhysicsNational University of IrelandGalway H91 CF50Ireland Compact Imaging Ireland Ltd. Galway H91 CF50Ireland Colgate-Palmolive Global Technology Centre Piscataway NJ 08855USA Compact Imaging Inc.Mountain View 94043USA Royal College of Surgeons(RCSI) DublinIreland

Multiple reference optical coherence tomography（MR-OCT） is a recently developed, low-cost and compact time-domain OCT solution for primary care and consumer level applications. A combination of a voice coil actuator and a partial mirror（PM） extends the scan range for imaging depths of approximately 1 mm in biological samples. Our previous research on MR-OCT is based only on intensity information obtained from the depth-resolved interference signal. In this Letter, we extract the phase information from the MR-OCT signal and, hence, provide an additional contrast modality. The phase sensitivity of the system is measured to be approximately 0.2 and 1.5 rad for the first and twelfth orders of reflection when using a mirror as the *** Letter describes first results of phase-sensitive data measured on a phantom obtained with MR-OCT. Data from a chick embryo chorioallantoic membrane（CAM） is used to demonstrate the feasibility of MR-OCT for in vivo phase-sensitive imaging.

关键词： Feasibility study of phase-sensitive imaging based on multiple reference optical coherence tomography VCM Figure CAM

Late polymicrobial transjugular intrahepatic portosystemic shunt infection in a liver transplant patient:A case report

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World journal of Hepatology 2022年第4期14卷 846-853页

作者： Irene De La Caridad Perez Ziv j Haskal john I hogan Curtis K Argo Department of Medicine University of Virginia Medical CenterCharlottesvilleVA 22903United States Department of Radiology and Medical Imaging Division of Vascular and Interventional RadiologyUniversity of Virginia Medical CenterCharlottesvilleVA 22903United States Department of Medicine Division of Infectious Diseases and International HealthUniversity of Virginia Medical CenterCharlottesvilleVA 22903United States Department of Medicine Division of Gastroenterology and HepatologyUniversity of Virginia Medical CenterCharlottesvilleVA 22903United States

BACKGROUND Infection of a transjugular intrahepatic portosystemic shunt(TIPS)stent is a rare and serious complication that most commonly occurs during TIPS creation and *** typically present with recurrent bacteremia due to shunt occlusion or *** date there are approximately 58 cases *** present a patient diagnosed with late polymicrobial TIPS infection five years following TIPS *** SUMMARY A 63-year-old female status-post liver transplant with recurrent cirrhosis and portal hypertension presented with sepsis and recurrent extended-spectrum betalactamase Escherichia coli *** tomography of the abdomen revealed an occluded TIPS with thrombus extension into the distal right portal vein,and focal thickening of the cecum and ascending *** revealed patchy ulcers in these areas with histopathology demonstrating ulcerated colonic mucosa with fibrinopurulent *** thrombectomy and revision revealed infected-appearing *** initially cleared her infection with antibacterial therapy and TIPS revision;however,soon after,she developed Enterobacter cloacae bacteremia and Candida glabrata and *** fungemia with recurrent TIPS *** remained on antifungal therapy indefinitely and later developed vancomycin-resistant Enterococcus faecium with recurrent TIPS *** option of liver re-transplant for removal of the infected TIPS was not offered given her critical illness and complex shunt *** patient became intolerant to linezolid and elected hospice *** Clinicians should be aware that TIPS superinfection may occur as long as five years following TIPS creation in an immunocompromised patient.

关键词： Transjugular intrahepatic portosystemic shunt Endotipsitis Colitis Liver cirrhosis Liver transplantation Case report

Overview of the progress on haploidentical hematopoietic transplantation

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World journal of Transplantation 2016年第4期6卷 665-674页

作者： Nosha Farhadfar William j hogan Division of Hematology Department of Medicine Mayo Clinic

Allogeneic hematopoietic stem cell transplant(HSCT) remains the only potentially curative option for variety of hematologic disorders. Lack of a suitable fully HLAmatched donor limits this option for many patients. Without a suitable related or unrelated HLA-matched donor,umbilical cord blood and haploidentical family members provide a potential source of stem cells. Timely donor availability makes haploidentical donors an attractive alternative donor source. Initial attempts at haploidentical HSCT was associated with significantly increased mortality owing to high rates of graft rejection and severe graftversus-host disease caused by major donor-recipient HLAdisparity. However, over the past decade, outcomes of haploidentical HSCT have improved significantly. Here, we review the advantages and challenges of haploidentical transplantation. We also discuss new developments to attempt to overcome the challenges to a successful haploidentical transplantation.

关键词： Haploidentical donor Hematopoietic stem cell transplantation Hematological malignancies Transplant related mortality

SOPHIE: Generative Neural Networks Separate Common and Specific Transcriptional Responses

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Genomics, Proteomics & Bioinformatics 2022年第5期20卷 912-927页

作者： Alexandra j.Lee Dallas L.Mould jake Crawford Dongbo Hu Rani K.Powers Georgia Doing james C.Costello Deborah A.hogan Casey S.Greene Genomics and Computational Biology Graduate Program University of PennsylvaniaPhiladelphiaPA 19104USA Department of Microbiology and Immunology Geisel School of Medicine at DartmouthHanoverNH 03755USA Department of Systems Pharmacology and Translational Therapeutics University of PennsylvaniaPhiladelphiaPA 19104USA Wyss Institute for Biologically Inspired Engineering Harvard UniversityBostonMA 02115USA Department of Pharmacology University of Colorado School of MedicineDenverCO 80045USA Center for Health AI University of Colorado School of MedicineDenverCO 80045USA Department of Biochemistry and Molecular Genetics University of Colorado School of MedicineDenverCO 80045USA

Genome-wide transcriptome profiling identifies genes that are prone to differential expression(DE)across contexts,as well as genes with changes specific to the experimental *** genes that are specifically changed in a context of interest from common differentially expressed genes(DEGs)allows more efficient prediction of which genes are specific to a given biological process under ***,common DEGs or pathways can only be identified through the laborious manual curation of experiments,an inordinately time-consuming *** we pioneer an approach,Specific cOntext Pattern Highlighting In Expression data(SOPHIE),for distinguishing between common and specific transcriptional patterns using a generative neural network to create a background set of experiments from which a null distribution of gene and pathway changes can be *** apply SOPHIE to diverse datasets including those from human,human cancer,and bacterial pathogen Pseudomonas *** identifies common DEGs in concordance with previously described,manually and systematically determined common *** molecular validation indicates that SOPHIE detects highly specific but low-magnitude biologically relevant transcriptional ***’s measure of specificity can complement log2 fold change values generated from traditional DE *** example,by filtering the set of DEGs,one can identify genes that are specifically relevant to the experimental condition of ***,these results can inform future research *** scripts used in these analyses are available at https://***/greenelab/*** can access https://***/greenelab/sophie to run SOPHIE on their own data.

关键词： Neural network Transcriptomics Software Differential expression analysis Machine learning

Development of photoreactive demineralized bone matrix 3D printing colloidal inks for bone tissue engineering

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Regenerative Biomaterials 2023年第1期10卷 1604-1617页

作者： Katie j.hogan Hayriye Oztatlı Marissa R.Perez Sophia Si Reyhan Umurhan Elysa jui Ziwen Wang Emily Y.jiang Sa R.Han Mani Diba K.jane Grande-Allen Bora Garipcan Antonios G.Mikos Department of Bioengineering Rice UniversityMS-1426500 Main StreetHoustonTX 77030USA Baylor College of Medicine Medical Scientist Training Program HoustonTX 77030USA Institute of Biomedical Engineering Bo�gazic¸i University_Istanbul34684Turkey

Demineralized bone matrix(DBM)has been widely used clinically for dental,craniofacial and skeletal bone repair,as an osteoinductive and osteoconductive material.3D printing(3DP)enables the creation of bone tissue engineering scaffolds with complex geometries and *** methacryloylated gelatin nanoparticles(GNP-MAs)3DP inks have been developed,which display gel-like behavior for high print fidelity and are capable of post-printing photocrosslinking for control of scaffold swelling and ***,novel DBM nanoparticles(DBM-NPs,∼400 nm)were fabricated and characterized prior to incorporation in 3DP *** objectives of this study were to determine how these DBM-NPs would influence the printability of composite colloidal 3DP inks,assess the impact of ultraviolet(UV)crosslinking on 3DP scaffold swelling and degradation and evaluate the osteogenic potential of DBM-NP-containing composite colloidal *** addition of methacryloylated DBM-NPs(DBM-NP-MAs)to composite colloidal inks(100:0,95:5 and 75:25 GNP-MA:DBM-NP-MA)did not significantly impact the rheological properties associated with printability,such as viscosity and shear recovery or *** crosslinking with a UV dosage of 3 j/cm2 directly impacted the rate of 3DP scaffold swelling for all GNP-MA:DBM-NP-MA ratios with an∼40%greater increase in scaffold area and pore area in uncrosslinked versus photocrosslinked scaffolds over 21 days in phosphate-buffered saline(PBS).Likewise,degradation(hydrolytic and enzymatic)over 21 days for all DBM-NP-MA content groups was significantly decreased,∼45%less in PBS and collagenase-containing PBS,in UV-crosslinked versus uncrosslinked *** incorporation of DBM-NP-MAs into scaffolds decreased mass loss compared to GNP-MA-only scaffolds during collagenase *** in vitro osteogenic study with bone marrow-derived mesenchymal stem cells demonstrated osteoconductive properties of 3DP scaffolds for the DBM-NP-MA contents examine

关键词： demineralized bone matrix colloidal hydrogels 3D printing bone tissue engineering

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PC机多媒体数据采集系统

电子与仪表 1994年第3期 19-22页

作者： hogan,j 钟华

16岁以上肝硬化患者的评估和管理：NICE指南概要

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英国医学杂志中文版 2017年第7期20卷 402-404页

作者： P Harrison B j hogan L Floros health London,UK 马莉杨红 Kings College Hospital London SE5 9RS UK Guys's & St Thomas' Hospitals NHS Foundation Trust London UK National Guideline Centre Royal College of Physicians London NW14LE UK 北京协和医院消化科

肝硬化的临床识别困难，特别是代偿期肝硬化患者大多无症状，诊断难度更大。关于哪些患者需要进行肝硬化检查，选择何种检查方法，英格兰和威尔士地区的临床实践缺乏统一。因此我们推出本指南，旨在为临床提供帮助，包括肝硬化的诊断、... 详细信息

肝硬化的临床识别困难，特别是代偿期肝硬化患者大多无症状，诊断难度更大。关于哪些患者需要进行肝硬化检查，选择何种检查方法，英格兰和威尔士地区的临床实践缺乏统一。因此我们推出本指南，旨在为临床提供帮助，包括肝硬化的诊断、将有失代偿风险的患者及时转诊给专科医师，以及肝硬化患者的管理——包括监测和治疗并发症等方面。

关键词：肝硬化患者评估方法临床识别临床分析

Underutilization of Living Donor Liver Transplantation in the United States: Bias against MELD 20 and Higher

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journal of Clinical and Translational Hepatology 2016年第3期4卷 169-174页

作者： Ryan B.Perumpail Eric R.Yoo George Cholankeril Lupe hogan Melodie Deis Waldo C.Concepcion C.Andrew Bonham Zobair M.Younossi Robert j.Wong Aijaz Ahmed Division of Gastroenterology and Hepatology Stanford University School of Medicine Stanford CA USA Department of Medicine University of Illinois College of Medicine Chicago IL USA Division of Gastroenterology and Hepatology University of Tennessee Health Sciences Center Memphis TN USA Division of Surgery Division of Abdominal Transplantation Stanford University School of Medicine Stanford CA USA Department of Medicine Center for Liver Diseases Inova Fairfax HospitalFalls Church VA USA Division of Gastroenterology and Hepatology Alameda Health System Highland Hospital CampusOakland CA USA

Background and Aims:Utilization of living donor liver transplantation (LDLT) and its relationship with recipient Model for End-Stage Liver Disease (MELD) needs further evaluation in the United States (U.S.).We evaluated the association between recipient MELD score at the time of surgery and survival following ***:All *** LDLT recipients with MELDsharing *** following LDLTwas stratified into three MELD categories (MELD< 15 *** 15-19 *** 20-24) and evaluated using Kaplan-Meier methods and multivariate Cox proportional hazards ***:Overall,2,258 patients underwent *** to patients with MELD< 15,overall 5-year survival following LDLT was similar among patients with MELD 15-19 (80.9% vs.80.3%,p =0.77) and MELD 20-24 (81.2% vs.80.3%,p =0.73).When compared to patients with MELD<15,there was no significant difference in long-term post-LDLT survival among those with MELD 15-19 (HR:1.11,95% CI:0.85-1.45,p =0.45) and a non-significant trend towards lower survival in patients with MELD 20-24 (HR:1.28,95%CI:0.91-1.81,p =0.16).Only 14% of LDLTs were performed in patients with MELD 20-24 and the remaining 86% in patients with MELD< ***:LDLT is underutilized in patients with MELD 20 and higher.

关键词： Living donors Liver transplantation Waitlist Model for End-Stage Liver Disease(MELD)

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植物油基冷却剂——绿色冷却剂发展新趋势

国防制造技术 2011年第6期 57-58页

作者： Brian j.hogan 祁萌

绿色冷却剂的定义在加工过程中,金属切削冷却剂的使用是很频繁的,并且几乎每位制造商都会以使用绿色金属切削冷却剂作为大肆宣传的口号。供应商们坚信冷却剂、润滑剂同传统工业产品一样。

关键词：切削冷却加工过程润滑性能难加工材料极压添加剂批量加工周围环境生产效率整体成本刀具寿