نتایج جستجو برای: oct

تعداد نتایج: 15938  

Journal: :Mechanisms of Development 2006
Ying Cao Doreen Siegel Walter Knöchel

Three POU factors of subclass V, Oct-25, Oct-60 and Oct-91 are expressed in Xenopus oocytes and early embryos. We here demonstrate that vegetal overexpression of Oct-25, Oct-60, Oct-91 or mammalian Oct-3/4 suppresses mesendoderm formation in Xenopus embryos. Oct-25 and Oct-60 are shown to inhibit activin/nodal and FGF signaling pathways. Loss of Oct-25 and Oct-60 function results in elevated tr...

Journal: :iranian journal of cancer prevention 0
zahra madjd f hashemi n shayanfar e farahani ah zarnani am sharifi

abstract introduction: cancer stem cells are a small subpopulation of cells within a tumor which are responsible for maintaining the tumor mass. a number of factors such as oct-4 that govern the fate of adult stem cells also play a role in malignant cell transformation. oct-4 is a key regulator of self-renewal in embryonic stem cells; its expression is potentially correlated with tumorigenesis ...

Journal: :Transactions of the American Ophthalmological Society 2008
Joel S Schuman

PURPOSE Optical coherence tomography (OCT) is a rapidly evolving, robust technology that has profoundly changed the practice of ophthalmology. Spectral domain OCT (SD-OCT) increases axial resolution 2- to 3-fold and scan speed 60- to 110-fold vs time domain OCT (TD-OCT). SD-OCT enables novel scanning, denser sampling, and 3-dimensional imaging. This thesis tests my hypothesis that SD-OCT improv...

ژورنال: Hormozgan Medical Journal 2008
Ghorbani, S, Kashani, E, Lotfalizadeh, M, Mohammadzadeh, A, Qomhan, N,

Introduction: Acidosis-hypoxic phenomenon is a valid indicator to determine fetal distress and is defined by measuring the blood pH of umblical cord. None of the present screening tests for evaluation of pregnant mothers have acceptable clinical accuracy to assess fetal acidosis. We decided to evaluate the relationship between fetal well being tests Non-Stress Test (NST), Oxytocin Challenge T...

Journal: :Acta Informatica Medica 2018

Journal: :Photonics 2022

The line field (LF) design choice for the lateral image formation mechanism (lateral format) has historically been a fraction of whole optical coherence tomography (OCT) field. However, as OCT technology develops, parallelised acquisition LF-OCT formats (LF-time domain (TD)-OCT, LF-spectral (SD)-OCT, LF-swept source (SS)-OCT) offers benefits and capabilities, which may mean it is now becoming m...

2014
Carlos A Medina Thomas Plesec Arun D Singh

Optical coherence tomography (OCT) has become pivotal in the practice of ophthalmology. Similar to other ophthalmic subspecialties, ophthalmic oncology has also incorporated OCT into practice. Anterior segment OCT (AS-OCT), ultra-high resolution OCT (UHR-OCT), spectral domain OCT (SD-OCT) and enhanced depth imaging OCT (EDI-OCT), have all been described to be helpful in the diagnosis, treatment...

Journal: :modares journal of medical sciences: pathobiology 2012
roshanak najafi majid sadeghizadeh seyed javad mowla

objective: in an attempt to develop safer and more effective gene therapy approaches as a realistic treatment for various forms of cancer, researchers are increasingly using tumor-specific promoters (tsp) to drive the expression of the gene of interest and eradicate cancer cells. in this study, for the first time we introduce the oct-4 promoter as a cancer-specific promoter with a high efficacy...

Journal: :Genes & development 1993
M A Cleary S Stern M Tanaka W Herr

Transcriptional regulation by the ubiquitous human POU homeo domain protein Oct-1 and the related B-cell protein Oct-2 is a model for understanding how proteins that recognize the same regulatory site elicit different programs of gene transcription. Here, we describe a mechanism for differential promoter activation whereby only Oct-1, through selective corecruitment with the herpesvirus trans-a...

Journal: :Investigative ophthalmology & visual science 2009
Ute E K Wolf-Schnurrbusch Lala Ceklic Christian K Brinkmann Milko E Iliev Manuel Frey Simon P Rothenbuehler Volker Enzmann Sebastian Wolf

PURPOSE To compare central retinal thickness (CRT) measurements in healthy eyes by different commercially available OCT instruments and to compare the intersession reproducibility of such measurements. METHODS Six different OCT instruments (Stratus OCT [Carl Zeiss Meditec, Inc. Dublin, CA], SOCT Copernicus [Reichert/Optopol Technology, Inc., Depew, NY], Spectral OCT/SLO [Opko/OTI, Inc., Miami...

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