Publications by authors named "Han H Cheong"

We analyzed the spontaneous adverse event database in Singapore to determine the types of cutaneous adverse drug reactions (CADRs) and causative drugs reported. We selected 10 CADRs-of-interest, and identified the suspected drugs and the characteristics of the at-risk population. ADR reports received from 2006 to 2015 of the system organ class "Skin and Appendages Disorders" were analyzed based on patient demographics, the types of CADRs, suspected drugs, outcome, and latency period.

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Background: The use of Complementary and Alternative Medicine (CAM) has been increasing over the years. A recent review of adverse event reports (AERs) associated with CAM in Singapore found a notable number of AERs submitted. The objectives of this study are to analyse hepatotoxicity cases associated with CAM in Singapore based on spontaneous adverse event reporting to the Health Sciences Authority (HSA), and to highlight safety signals for specific herbal ingredients.

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Objective: Prior studies highlighted that patients on chronic medications who used complementary and alternative medicines (CAMs) did not share this information with their healthcare providers. Furthermore, there might be potential adverse interactions between CAMs and antiepileptic drug (AED) therapy. However, there are no studies that investigate the effect of religion or race on CAM use in a multiethnic community.

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The primary hepatocyte is the best benchmark for drug biotransformation studies. However, due to the severe shortage of primary hepatocytes, there is a need for alternative reliable cell source. This study aims to isolate multipotent epithelial cells from the umbilical cord, differentiate these cells into hepatocyte-like cells (HLCs), and investigate the potential of using the differentiated cells for in vitro drug metabolism model.

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Background: Growth factors and cytokines involved in the wound healing process seem to be immobilized at the cell surface and extracellular matrix via binding with proteoglycans, making them important modulators of cell dynamics. Our aim was to investigate the expression of two proteoglycans, namely syndecan-2 and decorin, and to elucidate their role in the pathogenesis of an aberrant wound healing process leading to keloid scar.

Methods: Intrinsic expression of syndecan-2, fibroblast growth factor (FGF)-2, and decorin in keloid tissue was investigated using Western blotting and immunohistochemistry.

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