Xiaoping Wei

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BACKGROUND Mesenchymal stem cells (MSCs) can be induced to differentiate into neuronal cells under appropriate cellular conditions and transplanted in brain injury and neurodegenerative diseases animal models for neuroregeneration studies. In contrast to the embryonic stem cells (ESCs), MSCs are easily subject to aging and senescence because of their finite(More)
A high degree of data availability is required to ensure QoS in distributed video server environments. In this paper, we propose an algorithm for fault tolerant data placement in a distributed video server that determines the placement of video objects so as to ensure continuity of video requests in the event of node failures. Our performance studies(More)
Nearly all of the multimedia streaming applications running on the Internet today are basically configured or designed for 2D video broadcast or multicast purposes. With its tremendous flexibility, MPEG-4 interactive client-server applications are expected to play an important role in online multimedia services in the future. This paper presents the initial(More)
INTRODUCTION The retinoic acid (RA) signaling pathway plays important roles in neural development. All-trans retinoic acid (ATRA) activates the RA signal by regulating RAR-β in mesenchymal stem cell (MSC)-derived neuron cells. Here, we try to investigate whether RAR-β over-expression can affect neuronal differentiation of MSCs. MATERIAL AND METHODS The(More)
  • Xia Liu, Ting Cui, Yingying Li, Yuting Wang, Qinghong Wang, Xin Li +5 others
  • 2014
Vitamin A is a critical micronutrient for regulating immunity in many organisms. Our previous study demonstrated that gestational or early-life vitamin A deficiency decreases the number of immune cells in offspring. The present study aims to test whether vitamin A supplementation can restore lymphocyte pools in vitamin A-deficient rats and thereby improve(More)
In this paper, we present the design of a flexible framework for an IP-based network that will support an interactive multimedia (MM) system. The system will enable end users to: 1) author their own MM presentations, 2) control the delivery of the presentation, and 3) interact with the content (media objects) to make changes to the presentation in real(More)
BACKGROUND Histone acetylation, which is a chromatin modification of histone tails, can dynamically regulate the expression of various genes in normal development. HDAC2 is a negative regulatory factor of acetylation and closely related to learning and memory. NSE is a nerve marker and vital for maintaining physiological functions in nervous system.(More)
OBJECTIVE To improve the efficiency of primary culture of hippocampal neurons and obtain highly purified neurons with good in vitro growth and minimal risk of contamination. METHODS The hippocampal neurons of neonatal Wistar rats were isolated and the single cell suspension was prepared by mechanical trituration and sedimentation in stead of trypsin(More)
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