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Ischemic penumbra in retina endures： vascular neuropathology is reconciled

Neural Regeneration Research 2016年第5期11卷 737-739页

作者： david mcleod Academic Department Manchester Royal Eye Hospital and University of Manchester Centre for Ophthalmology & Vision ResearchManchester UK

A physiological state of＂normoxia＂obtains when tissue oxygen tension（pO_2）is sufficient to drive mitochondrial respiration throughout a volume of *** 30-40%of the available oxygen is normally extracted from hemogl... 详细信息

关键词： Ischemic penumbra in retina endures vascular neuropathology is reconciled

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Quantitative analysis of a panel of gene expression in prostate cancer——with emphasis on NPY expression analysis

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2007年第12期8卷 853-859页

作者： LIU Ai-jun FURUSATO Bungo RAVINDRANATH Lakshmi CHEN Yong-mei SRIKANTAN Vasanta mcleod david G. PETROVICS Gyorgy SRIVASTAVA Shiv Department of Pathology Chinese PLA General Hospital Beo＇ing 100853 China Center for Prostate Disease Research Uniformed Services University of the Health Sciences Rockville MD 20852 USA Urology Service Walter Reed Army Medical Center Washington DC 20307 USA

Objective： To investigate molecular alterations associating with prostate carcinoma progression and potentially provide information toward more accurate prognosis/diagnosis. Methods： A set of laser captured microdissected （LCM） specimens from 300 prostate cancer （PCa） patients undergoing radical prostatectomy （RP） were defined. Ten patients representing ＂aggressive＂ PCa, and 10 representing ＂non-aggressive＂ PCa were selected based on prostate-specific antigen （PSA） recurrence, Gleason score, pathological stage and tumor cell differentiation, with matched patient age and race between the two groups. Normal and neoplastic prostate epithelial cells were collected with LCM from frozen tissue slides obtained from the RP specimens. The expressions of a panel of genes, including NPY, PTEN, AR, AMACR, DD3, and GSTP1, were measured by quantitative real-time RT-PCR （TaqMan）, and correlation was analyzed with clinicopathological features. Results： The expressions of AMACR and DD3 were consistently up-regulated in cancer cells compared to benign prostate epithelial cells in all PCa patients, whereas GSTP1 expression was down regulated in each patient. NPY, PTEN and AR exhibited a striking difference in their expression patterns between aggressive and non-aggressive PCas （P=0.0203, 0.0284, and 0.0378, respectively, Wilcoxon rank sum test）. The lower expression of NPY showed association with ＂aggressive＂ PCas based on a larger PCa patient cohort analysis （P=0.0037, univariate generalized linear model （GLM） analysis）. Conclusion： Despite widely noted heterogeneous nature of PCa, gene expression alterations ofAM,4CR, DD3, and GSTP1 in LCM-derived PCa epithelial cells suggest for common underlying mechanisms in the initiation of PCa. Lower NPY expression level is significantly associated with more aggressive clinical behavior of PCa; PTEN and AR may have potential in defining PCa with aggressive clinical behavior. Studies along these lines have potential to define PCa-associated gen

关键词： Prostate cancer NPY expression Quantitative real-time reverse-transcript polymerase chain reaction (RT-PCR)

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Amphibians and Reptiles of Luzon Island,V:The Herpetofauna of Angat Dam Watershed,Bulacan Province,Luzon Island,Philippines

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Asian Herpetological Research 2011年第4期2卷 177-198页

作者： david S.mcleod Cameron D.SILER Arvin C.DIESMOS Mae L.DIESMOS Vhon S.GARCIA Angela O.ARKONCEO Kelvin L.BALAQUIT Charlene C.UY Mariden M.VILLASERAN Earle C.YARRA Rafe M.BROWN Natural History Museum and Biodiversity Research Center Department of Ecology and Evolutionary BiologyUniversity of Kansas LawrenceKS 66045-7561USA Herpetology Section Zoology DivisionPhilippine National MuseumRizal ParkBurgos St.Ermita 1000ManilaPhilippines University of Santo Tomas Espana BoulevardSampaloc 1015ManilaPhilippines

We report amphibian and reptile distribution records based on recent biodiversity surveys conducted at the Angat Watershed Reservation, Bulacan Province, Luzon Island, Philippines. This watershed constitutes the principal water source for Manila, the Philippines＇ largest metropolitan area. As virtually nothing is known of the herpetological diversity of the immediate area and the surrounding Bulacan Province, all species recorded as part of our surveys constitute major geographical records and/or significant range extensions. Our data result in a total of 63 new records of amphibian （19 frogs） and reptile （22 lizards, 2 turtles, and 20 snakes） species for this protected area （and immediate vicinity） that serves as a watershed for the major metropolitan area of Manila and surrounding cities. Together with the few previous literature records, our new records bring the total number of amphibian and reptile species for Bulacan Province to 68. We discuss several strategies for future survey work （focusing on habitat type, seasonal variation, and elevational variability） that we anticipate will result in increased knowledge of diversity within the Angat Watershed Reserve. The impressive level of herpetological diversity within such a small area, so close to Metro Manila, emphasizes that the diversity and distribution patterns of amphibians and reptiles from Luzon are still poorly known and in need of further study.

关键词： amphibians Anagat Dam diversity Philippines reptiles

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Quantitative Analysis of a Panel of Gene Expression in Matched Benign and Neoplastic Prostate Epithelial Cells from Patients with“Aggressive”and“Nonaggressive”Prostate Cancer

Quantitative Analysis of a Panel of Gene Expression in Match...

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中华医学会病理学分会2005年学术年会

作者：刘爱军 Bungo Furusato Lakshmi Ravindranath Syed Shaheduzzaman Vasantha Srikantan Iabell A.Sesterhenn david G.mcleod Judd W.Moul Shiv Srivastava Gyorgy Petrovics Centerfor Prostate Disease Research Uniformed Services University of the Health Sciences Center for Prostate Disease Research Uniformed Services University of the Health Sciences Department of Genitourinary Pathology Armed Forces Institute of Pathology Urology Service Walter Reed Army Medical Center Center for Prostate Disease Research Uniformed Services University of the Health Sciences Urology ServiceWalter Reed Army Medical Center

Prostate cancer (CaP) is a complex, multifactorialdisease with heterogeneous tumor types, making the prediction of the clinical course for individual CaP patients a challenge. To better understand the molecular basis of CaP and potentially provide information toward more accurate prognosis/diagnosis, we have defined a set of laser capture microdissected (LCM) specimens that are being used for quantitative parallel expression analysis of a panel of genes frequently altered in CaP. Experimental Design: From 300 CaP patients undergo-

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Frequent Expression Alterations of ETS Related Gene-1(ERG1)in Prostate Cancer Transcriptome Reveal Diagnostic and Prognostic Biomarker Potential

Frequent Expression Alterations of ETS Related Gene-1(ERG1)i...

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中华医学会病理学分会2005年学术年会

作者：刘爱军 Gyorgy Petrovics Syed Shaheduzzaman Bungo Furasato Martin Nau Lakshmi Ravindranath Albert Dobi Vasantha Srikantan Isabell A Sesterhenn david G mcleod Maryanne Vahey Judd W Moul Shiv Srivastava Centerfor Prostate Disease Research US Military Cancer InstituteUniformed Services University Center for Prostate Disease Research US Military Cancer InstituteUniformed Services University Department of Genitourinary Pathology Armed Forces Institute of Pathology Laboratory of Functional Genomics Walter Reed Army Institute of Research Urology Service Walter Reed Army Medical Center

Transcription factors encoded by the ETS family of genes are central in integrating signals that regulate cell growth and differentiation, stress responses and tumorigenesis. This study, using laser microdissected paired benign and malignant prostate epithelial cells from prostate cancer (CaP) patients (n=114), identifies ERG, a member of the ETS transcription factor family, as the most frequently overexpressed poto-oncogene in the transcriptome of malignant prostate epithelial cells. Combined quantitative expression analysis of ERG with two other genes commonly overexpressed in CaP, AMACR and DD3, revealed overexpression of at least one of these three genes in virtually all cancer specimen (54 of 55). Therefore,

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Developing an Evolutionary Algorithm to Search for an Optimal Multi-Mother Wavelet Packets Combination

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Journal of Biomedical Science and Engineering 2015年第7期8卷 458-470页

作者： Ohad Bar Siman Tov J. david Schaffer Kenneth J. mcleod Department of Electrical and Computer Engineering State University of New York at Binghamton Binghamton NY USA Department of Bioengineering State University of New York at Binghamton Binghamton NY USA

The wavelet transform is a popular analysis tool for non-stationary data, but in many cases, the choice of the mother wavelet and basis set remains uncertain, particularly when dealing with physiological data. Furthermore, the possibility exists for combining information from numerous mother wavelets so as to exploit different features from the data. However, the combinatorics become daunting given the large number of basis sets that can be utilized. Recent work in evolutionary computation has produced a subset selection genetic algorithm specifically aimed at the discovery of small, high-performance, subsets from among a large pool of candidates. Our aim was to apply this algorithm to the task of locating subsets of packets from multiple mother wavelet decompositions to estimate cardiac output from chest wall motions while avoiding the computational cost of full signal reconstruction. We present experiments which show how a continuous assessment metric can be extracted from the wavelets coefficients, but the dual-objective nature of the algorithm (high accuracy with small feature sets) imposes a need to restrict the sensitivity of the continuous accuracy metric in order to achieve the small subset size desired. A possibly subtle tradeoff seems to be needed to meet the dual objectives.

关键词： Wavelet Transform Data Mining Genetic Algorithm

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