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  1. Chen Ban K, Singh H, Krishnan R, Fong Seow H
    J Surg Oncol, 2004 Jun 1;86(3):157-63.
    PMID: 15170655
    Previous studies showed that the frequency of beta-catenin mutation was different in mice when induced by different chemicals. The aim of this study is to compare the expression of beta-catenin and p53 in hepatocellular carcinoma (HCC) from areas with exposure to high and low levels of aflatoxin B1 (AFB1).
  2. Chia CS, Ban K, Ithnin H, Singh H, Krishnan R, Mokhtar S, et al.
    Immunol Lett, 2002 Dec 03;84(3):163-72.
    PMID: 12413732
    This is the first report on the detection of IL-18, IFN-gamma and IL-10 proteins in hepatocelllular carcinoma. In the apparently normal surrounding tissue, 13 out of 17 paired specimens showed positive immunoreactivity to IL-18 (76.5%) compared with six out of 17 in the tumour portion (35.3% of specimens). Thus, a significantly higher number of IL-18 positive specimens was found in the hepatocytes of apparently normal surrounding tissue compared with the tumour (P=0.018). In contrast, the number of specimens with positive immunoreactivity to the antibody against the Th1 cytokine, IFN-gamma expression in the hepatocytes was lower. Only one specimen from the apparently normal surrounding tissue (one out of 17; 5.9%) and three other specimens from the tumour portion (three out of 17; 17.6%) had positive immunoreactivity. Similarly, the expression of the Th2 cytokine, IL-10 in normal (four out of 17; 23.5%) and tumour portions (five out of 17; 29.4%) was also low. Thus, there did not appear to be predominant Th2 immune response as denoted by IL-10 expression. Using the Spearman correlation rank test, a significant correlation between IL-18 expression in the apparently normal surrounding tissue and high alpha-foetoprotein (AFP) levels of >350 IU/l. No correlation between IL-18 expression in the tumour portion and clinicopathological factors was found. There was also no correlation found between IL-18 and the other cytokines, namely, IFN-gamma and IL-10 expression These new findings provide additional information on the type of cytokines expressed in the tumour microenvironment and give a further insight into the role of cytokines in the pathogenesis of cancer which is critical for the development of effective immunotherapeutic approaches for cancer therapy in the future.
  3. Samarasekera DD, Chong YS, Ban K, Lau LST, Gallagher PJ, Zhi Xiong C, et al.
    Med Teach, 2024 Dec;46(12):1553-1560.
    PMID: 39480997 DOI: 10.1080/0142159X.2024.2409293
    Singapore, located strategically at the meeting point of the Malacca Strait and the South China Sea, has established itself as a global financial and economic hub. Despite its small geographical size, Singapore is home to over 5 million people from diverse cultural backgrounds. The city-state's medical education landscape has evolved significantly over the past century. Originally, Singapore had only one undergraduate medical school, the NUS Yong Loo Lin School of Medicine, established in 1905. Over time, this institution has grown into Singapore's largest and oldest medical school. NUS Medicine's vision centres on developing highly competent, values-driven, and inspired healthcare professionals to transform the practice of medicine and improve health worldwide. A curriculum overhaul in 2020 introduced new educational components to prepare future healthcare professionals for the challenges of Singapore's resilient healthcare system. This includes proficiency in integrated care, collaboration across disciplines, and leveraging AI and data science in clinical decision-making. The introduction of a common curriculum in August 2023 for Medicine, Nursing, Dentistry, and Pharmacy undergraduates further aligns with Singapore's 'Healthier SG' vision, ensuring that graduates are well-equipped to meet the evolving needs of the healthcare landscape. The common curriculum aims to address professional hierarchies and foster interprofessional collaboration among students from diverse academic backgrounds. By promoting frequent interaction and a team-oriented mindset, the curriculum seeks to instil a collective approach to healthcare, emphasising the importance of interprofessional practice in achieving the broader goals of healthcare delivery. This paper describes the reforms that took place and how the challenges were mitigated in a research-intensive top-ranked academic medical institution. This strategic alignment of medical education with national healthcare priorities underscores NUS Medicine's commitment to transforming medical practice and improving health outcomes in Singapore and beyond.
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