نتایج جستجو برای: ex vivo
تعداد نتایج: 363745 فیلتر نتایج به سال:
the porcine eye is often used as an ex vivo animal model in ophthalmological research. it is well-suited for investigations concerning refractive surgery; however, corneal topography data are scarce. this study investigated the corneal topography and pachymetry of the porcine eye to provide further reproducible data. we evaluated freshly enucleated porcine eyes (n = 16) by performing computeriz...
Ex vivo culture of hematopoietic stem/progenitor cells could potentially improve the efficacy of human placental/umbilical cord blood (CB) in clinical hematopoietic stem cell (HSC) transplantation and allow gene transduction using conventional retroviral vectors. Therefore, we first examined the effects of a 7-day period of ex vivo culture on the hematopoietic capacity of CB CD34 1 cells. Mediu...
AIM To investigate the reproducibility of the in vivo endoscopic ultrasound (EUS) - guided needle based confocal endomicroscopy (nCLE) image patterns in an ex vivo setting and compare these to surgical histopathology for characterizing pancreatic cystic lesions (PCLs). METHODS In a prospective study evaluating EUS-nCLE for evaluation of PCLs, 10 subjects underwent an in vivo nCLE (AQ-Flex nCL...
We compared the growth of human lung cancer cells in an ex vivo three-dimensional (3D) lung model and 2D culture to determine which better mimics lung cancer growth in patients. A549 cells were grown in an ex vivo 3D lung model and in 2D culture for 15 days. We measured the size and formation of tumor nodules and counted the cells after 15 days. We also stained the tissue/cells for Ki-67, and C...
سلول‌های بنیادی خونساز، سلول‌های نادری هستند که دارای دو توانایی منحصر به فرد خود نوسازی و تمایز به همه سلول‌های رده‌های خونسازی هستند. از این سلول‌ها در درمان بسیاری از بیماری‌ها از جمله لوسمی، ناهنجاری‌های مادرزادی مرتبط با خون و سیستم ایمنی، آنمی آپلاستیک استفاده شده است. سلول‌های بنیادی مغز استخوان و سلول‌های بنیادی در جریان خون محیطی رایج‌ترین منابع برای پیوند هستند؛ اگرچه استفاده از آن‌ها...
In the last 20 years, lung transplantation has become the standard treatment for patients with end-stage lung disease. However, less than 20% of the donor lungs available for transplant are actually usable. This disparity between the growing number of recipients and the small number of donors has resulted in increased mortality among lung transplant candidates on waiting lists. Strategies such ...
هدف: پیوند سلول‌های بنیادی خونساز (HSCs Hematopoietic Stem Cells,) یک روش درمانی برای بیماری‌های بدخیم و غیر بدخیم خونی می‌باشد. محدودیت اصلی استفاده از خون بندناف در پیوند مغز استخوان، مقدار کم HSCs به دلیل حجم کم خون بند ناف است. بنابراین سیستم‌های مختلفی برای تکثیر HSCs در شرایط آزمایشگاهی (ex vivo) برای غلبه بر این محدودیت طراحی شدند. هدف از این مطالعه مقایسه شرایط مختلف تکثیر HSCs در ex...
Background and Aim: Complete removal of gutta-percha from the root canal system and its remnants is a challenge in endodontic retreatment. This ex-vivo study aimed to assess the efficacy of XP-Endo Finisher R (XEFR) in removing root filling remnants from straight canals of mandibular premolars in root canal retreatment. Materials and Methods: In this ex-vivo study, 30 single-rooted mandib...
With increasingly large numbers of mouse models of human disease dedicated to MRI studies, compromises between in vivo and ex vivo MRI must be fully understood in order to inform the choice of imaging methodology. We investigate the application of high resolution in vivo and ex vivo MRI, in combination with tensor-based morphometry (TBM), to uncover morphological differences in the rTg4510 mous...
Diabetes mellitus is a frequent cause for chronic, difficult-to-treat wounds. New therapies for diabetic wounds are urgently needed and in-vitro or ex-vivo test systems are essential for the initial identification of new active molecules. The aim of this study is to compare in-vitro and ex-vivo test systems for their usability for early drug screening and to investigate the efficacy of a birch ...
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