Y-P Ng

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Acetylcholine receptor inducing activity (ARIA) is a glycoprotein released from the motor neuron to stimulate the synthesis of acetylcholine receptors (AChRs) on the postsynaptic muscle fiber. Transcripts encoding ARIA were detected not only in brain but also in muscle, and immunohistochemical staining showed that muscle-derived ARIA was restricted to the(More)
It has previously been reported that the avian H5N1 type of influenza A virus can be detected in neurons and astrocytes of human brains in autopsy cases. However, the underlying neuropathogenicity remains unexplored. In this study, we used differentiated human astrocytic and neuronal cell lines as models to examine the effect of H5N1 influenza A viral(More)
Wild-type p53 competitively binds to the promoter region of COX-2 in vitro and inhibits its transcription. We examined the association between p53 mutation and COX-2 expression in gastric cancer. COX-2 over-expression was seen in 19 (48.7%) cases. These tumours had more lymph-node metastasis (P = 0.048) and tended to have a poorer survival (P = 0.07).(More)
BACKGROUND Retinoic acid-regulated nuclear matrix-associated protein (RAMP) is a WD40 repeat-containing protein that is involved in various biological functions, but little is known about its role in human cancer. This study aims to delineate the oncogenic role of RAMP in gastric carcinogenesis. METHODS RAMP expression was examined by real-time(More)
Agrin is a synapse-organizing molecule that mediates the nerve-induced aggregation of acetylcholine receptors (AChRs) and other postsynaptic components at the developing and regenerating vertebrate neuromuscular junctions. At the neuromuscular junction, three different cell types can express agrin, i.e., neuron, muscle, and Schwann cell. Several lines of(More)
A cholinergic neuroblastoma x glioma hybrid cell line NG108-15 is able to form functional synapses, and contains both AChR-aggregating and AChR-inducing activities when cocultured with myotubes. Several lines of evidence indicate that the AChR-inducing activity of NG108-15 cells is derived from neuregulin. The conditioned medium of cultured NG108-15 cells(More)
In vertebrate neuromuscular junctions, acetylcholinesterase (AChE; EC is highly concentrated at the synaptic basal lamina and the postsynaptic muscle fiber. The postsynaptic muscle cell is the primary source of AChE. However, several lines of evidence indicate that the presynaptic motor neuron is able to synthesize and secrete AChE at the(More)
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