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Choon-Nam Ong

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Suresh K Balasubramanian; Wolfgang G Kreyling; Choon-Nam Ong; Wei-Yi Ong; Kay-Wee Poh; Liya E Yu
The effect of primary particle size on biodistribution of inhaled gold nano-agglomerates.
Shao-Min Huang; Siew Hong Lam; Zhiyuan Gong; Fengguo Xu; Choon-Nam Ong
Metabolomics of developing zebrafish embryos using gas chromatography- and liquid chromatography-mass spectrometry.
Wanxing Eugene Ho; Chang Cheng; Hong Yong Peh; Steven R Tannenbaum; W S Fred Wong; Fengguo Xu; Yong-Jiang Xu; Choon-Nam Ong
Metabolomics reveals altered metabolic pathways in experimental asthma.

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2013: Suresh K Balasubramanian; Wolfgang G Kreyling; Choon-Nam Ong; Wei-Yi Ong; Kay-Wee Poh; Liya E Yu
The effect of primary particle size on biodistribution of inhaled gold nano-agglomerates.
Biomaterials 2013;34(22):5439-52.
2013: Shao-Min Huang; Siew Hong Lam; Zhiyuan Gong; Fengguo Xu; Choon-Nam Ong
Metabolomics of developing zebrafish embryos using gas chromatography- and liquid chromatography-mass spectrometry.
Molecular bioSystems 2013;9(6):1372-80.
2013: Wanxing Eugene Ho; Chang Cheng; Hong Yong Peh; Steven R Tannenbaum; W S Fred Wong; Fengguo Xu; Yong-Jiang Xu; Choon-Nam Ong
Metabolomics reveals altered metabolic pathways in experimental asthma.
American journal of respiratory cell and molecular biology 2013;48(2):204-11.
2013: Xiao Wei; Dong Zhang; Weiwei Zheng; Dajun Tian; Xia Wang; Xin Chen; Gengsheng He; Songhui Jiang; Choon-Nam Ong; Weidong Qu
Occurrence of regulated and emerging iodinated DBPs in the Shanghai drinking water.
PloS one 2013;8(3):e59677.
2012: Shao-Min Huang; Jasmine Jia'en Li; Sam Fong Yau Li; Boon-Huat Bay; Xinbing Zuo; Choon-Nam Ong
Metabolomics studies show dose-dependent toxicity induced by SiO(2) nanoparticles in MRC-5 human fetal lung fibroblasts.
Advanced healthcare materials 2012;1(6):779-84.
2012: Wanxing Eugene Ho; Choon-Nam Ong; Hong Yong Peh; Steven R Tannenbaum; Chang Cheng; Fengguo Xu; W S Fred Wong
Anti-malarial drug artesunate ameliorates oxidative lung damage in experimental allergic asthma.
Free radical biology & medicine 2012;53(3):498-507.
2012: Nasheen Naidoo; Cynthia Chen; Woon-Puay Koh; Yian-Ping Lee; Rob M van Dam; Jian-Min Yuan; Choon-Nam Ong
Plasma vitamin E and coenzyme Q10 are not associated with a lower risk of acute myocardial infarction in Singapore Chinese adults.
The Journal of nutrition 2012;142(6):1046-52.
2012: Jing Zhou; Xinqiang Zhu; Shi-Hao Tan; Dajing Xia; Xing-Fen Yang; Ruoxi Cao; Yiyang Chen; Shuai-Er Hu; Choon-Nam Ong; Han-Ming Shen
Andrographolide sensitizes cisplatin-induced apoptosis via suppression of autophagosome-lysosome fusion in human cancer cells.
Autophagy 2012;8(3):338-49.
2011: Fengguo Xu; Zunjian Zhang; Li Zou; Ying Liu; Choon-Nam Ong
Enhancement of the capabilities of liquid chromatography-mass spectrometry with derivatization: general principles and applications.
Mass spectrometry reviews 2011;30(6):1143-72.
2011: Cheng-Teng Ng; Choon-Nam Ong; Wai-Cheong G Yip; Boon-Huat Bay; S Thameem Dheen; Lin-Yue Lanry Yung
The induction of epigenetic regulation of PROS1 gene in lung fibroblasts by gold nanoparticles and implications for potential lung injury.
Biomaterials 2011;32(30):7609-15.
2011: W-P Koh; Bee Lan Lee; Y-P Lee; R Wang; Mimi C Yu; Jian-Min Yuan; Choon-Nam Ong
Plasma carotenoids and risk of acute myocardial infarction in the Singapore Chinese Health Study.
Nutrition, metabolism, and cardiovascular diseases : NMCD 2011;21(9):685-90.
2011: Jasmine J Li; Soo-Ling Lo; Cheng-Teng Ng; Resham Lal Gurung; Deny Hartono; M Prakash Hande; Choon-Nam Ong; Boon-Huat Bay; Lin Yue Lanry Yung
Genomic instability of gold nanoparticle treated human lung fibroblast cells.
Biomaterials 2011;32(23):5515-23.
2011: Xin Li; Jian-Ning Wang; Jun-Ming Huang; Xi-Kun Xiong; Mei-Fen Chen; Choon-Nam Ong; Han-Ming Shen; Xing-Fen Yang
Chrysin promotes tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) induced apoptosis in human cancer cell lines.
Toxicology in vitro : an international journal published in association with BIBRA 2011;25(3):630-5.
2010: Chye Sun Ong; Jing Zhou; Choon-Nam Ong; Han-Ming Shen
Luteolin induces G1 arrest in human nasopharyngeal carcinoma cells via the Akt-GSK-3β-Cyclin D1 pathway.
Cancer letters 2010;298(2):167-75.
2010: Suresh K Balasubramanian; Liming Yang; Lin Yue Lanry Yung; Choon-Nam Ong; Wei-Yi Ong; Liya E Yu
Characterization, purification, and stability of gold nanoparticles.
Biomaterials 2010;31(34):9023-30.
2010: Jasmine J Li; Deny Hartono; Choon-Nam Ong; Boon-Huat Bay; Lin Yue Lanry Yung
Autophagy and oxidative stress associated with gold nanoparticles.
Biomaterials 2010;31(23):5996-6003.
2010: Xin Li; Qing Huang; Choon-Nam Ong; Xing-Fen Yang; Han-Ming Shen
Chrysin sensitizes tumor necrosis factor-alpha-induced apoptosis in human tumor cells via suppression of nuclear factor-kappaB.
Cancer letters 2010;293(1):109-16.
2010: Jing Zhou; Choon-Nam Ong; Gang Min Hur; Han-Ming Shen
Inhibition of the JAK-STAT3 pathway by andrographolide enhances chemosensitivity of cancer cells to doxorubicin.
Biochemical pharmacology 2010;79(9):1242-50.
2010: You-Tong Wu; Hui-Ling Tan; Guanghou Shui; Chantal Bauvy; Qing Huang; Markus R Wenk; Choon-Nam Ong; Patrice Codogno; Han-Ming Shen
Dual role of 3-methyladenine in modulation of autophagy via different temporal patterns of inhibition on class I and III phosphoinositide 3-kinase.
The Journal of biological chemistry 2010;285(14):10850-61.
2010: Suresh K Balasubramanian; Jinatta Jittiwat; Manikandan Jayapal; Choon-Nam Ong; Liya E Yu; Wei-Yi Ong
Biodistribution of gold nanoparticles and gene expression changes in the liver and spleen after intravenous administration in rats.
Biomaterials 2010;31(8):2034-42.
2009: Fengguo Xu; Li Zou; Choon-Nam Ong
Multiorigination of chromatographic peaks in derivatized GC/MS metabolomics: a confounder that influences metabolic pathway interpretation.
Journal of proteome research 2009;8(12):5657-65.
2009: Fengguo Xu; Li Zou; Qingsong Lin; Choon-Nam Ong
Use of liquid chromatography/tandem mass spectrometry and online databases for identification of phosphocholines and lysophosphatidylcholines in human red blood cells.
Rapid communications in mass spectrometry : RCM 2009;23(19):3243-54.
2009: You-Tong Wu; Hui-Ling Tan; Qing Huang; Choon-Nam Ong; Han-Ming Shen
Activation of the PI3K-Akt-mTOR signaling pathway promotes necrotic cell death via suppression of autophagy.
Autophagy 2009;5(6):824-34.
2009: Swee Jin Tan; Levent Yobas; Gabriel Yew Hoe Lee; Choon-Nam Ong; Chwee Teck Lim
Microdevice for the isolation and enumeration of cancer cells from blood.
Biomedical microdevices 2009;11(4):883-92.
2009: Zhangjian Jiang; Feng Liu; Jennifer Jia Lei Goh; Lijun Yu; Sam Fong Yau Li; Eng Shi Ong; Choon-Nam Ong
Determination of senkirkine and senecionine in Tussilago farfara using microwave-assisted extraction and pressurized hot water extraction with liquid chromatography tandem mass spectrometry.
Talanta 2009;79(2):539-46.
2009: Chung-Yung Jetty Lee; Helen B Isaac; Shan Hong Huang; Lee Hua Long; Huansong Wang; Jan Gruber; Choon-Nam Ong; Ronan P Kelly; Barry Halliwell
Limited antioxidant effect after consumption of a single dose of tomato sauce by young males, despite a rise in plasma lycopene.
Free radical research 2009;43(6):622-8.
2009: Bee Lan Lee; Choon-Nam Ong
Comprehensive high-performance liquid chromatographic method for the measurements of lipophilic antioxidants in human plasma.
Journal of chromatography. A 2009;1216(15):3131-7.
2009: Wai Siang Law; Pei Yun Huang; Eng Shi Ong; Sunil Kumar Sethi; Sharon Saw; Choon-Nam Ong; Sam Fong Yau Li
Combination of 1H nuclear magnetic resonance spectroscopy and liquid chromatography/mass spectrometry with pattern recognition techniques for evaluation of metabolic profile associated with albuminuria.
Journal of proteome research 2009;8(4):1828-37.
2009: Eng Shi Ong; Cui Fang Chor; Li Zou; Choon-Nam Ong
A multi-analytical approach for metabolomic profiling of zebrafish (Danio rerio) livers.
Molecular bioSystems 2009;5(3):288-98.
2009: Wei-Yi Ong; Andrew M Jenner; Ning Pan; Choon-Nam Ong; Barry Halliwell
Elevated oxidative stress, iron accumulation around microvessels and increased 4-hydroxynonenal immunostaining in zone 1 of the liver acinus in hypercholesterolemic rabbits.
Free radical research 2009;43(3):241-9.
2009: Qing Huang; Y-T Wu; H-L Tan; Choon-Nam Ong; Han-Ming Shen
A novel function of poly(ADP-ribose) polymerase-1 in modulation of autophagy and necrosis under oxidative stress.
Cell death and differentiation 2009;16(2):264-77.
2008: Mia Isabelle; Bee Lan Lee; Choon-Nam Ong; Xueming Liu; Dejian Huang
Peroxyl radical scavenging capacity, polyphenolics, and lipophilic antioxidant profiles of mulberry fruits cultivated in southern China.
Journal of agricultural and food chemistry 2008;56(20):9410-6.
2008: Q S Li; G Y H Lee; Choon-Nam Ong; Chwee Teck Lim
AFM indentation study of breast cancer cells.
Biochemical and biophysical research communications 2008;374(4):609-13.
2008: Wai Siang Law; Pei Yun Huang; Eng Shi Ong; Choon-Nam Ong; Sam Fong Yau Li; Kishore Kumar Pasikanti; Eric Chun Yong Chan
Metabonomics investigation of human urine after ingestion of green tea with gas chromatography/mass spectrometry, liquid chromatography/mass spectrometry and (1)H NMR spectroscopy.
Rapid communications in mass spectrometry : RCM 2008;22(16):2436-46.
2008: Jing Zhou; Guo-Dong Lu; Chye Sun Ong; Choon-Nam Ong; Han-Ming Shen
Andrographolide sensitizes cancer cells to TRAIL-induced apoptosis via p53-mediated death receptor 4 up-regulation.
Molecular cancer therapeutics 2008;7(7):2170-80.
2008: Zhi-Ming Liu; Le-Qun Li; Min-Hao Peng; Tang-Wei Liu; Zhong Qin; Ya Guo; Kai-Yin Xiao; Xin-Ping Ye; Xin-Shao Mo; Xue Qin; Shan Li; Lu-Nan Yan; Han-Ming Shen; LianWen Wang; Qiao Wang; Kai-bo Wang; Ren-Xiang Liang; Zong-Liang Wei; Choon-Nam Ong; Regina M Santella; Tao Peng
Hepatitis B virus infection contributes to oxidative stress in a population exposed to aflatoxin B1 and high-risk for hepatocellular carcinoma.
Cancer letters 2008;263(2):212-22.
2008: You-Tong Wu; Hui-Ling Tan; Qing Huang; You-Sun Kim; Ning Pan; Wei-Yi Ong; Zheng-Gang Liu; Choon-Nam Ong; Han-Ming Shen
Autophagy plays a protective role during zVAD-induced necrotic cell death.
Autophagy 2008;4(4):457-66.
2008: Su Chi Lim; Rajmohan Lekshminarayanan; Siew Kheng Goh; Yuen Yeng Ong; Tavintharan Subramaniam; Chee Fang Sum; Choon-Nam Ong; Bee Lan Lee
The effect of coenzyme Q10 on microcirculatory endothelial function of subjects with type 2 diabetes mellitus.
Atherosclerosis 2008;196(2):966-9.
2007: Tao Peng; Le-Qun Li; Min-Hao Peng; Zhi-Ming Liu; Tang-Wei Liu; Ya Guo; Kai-Yin Xiao; Zhong Qin; Xin-Ping Ye; Xin-Shao Mo; Lu-Nan Yan; Bee-Lam Lee; Han-Ming Shen; Kazuyoshi Tamae; Lian Wen Wang; Qiao Wang; Khalid M Khan; Kai-Bo Wang; Ren-Xiang Liang; Zong-Liang Wei; Hiroshi Kasai; Choon-Nam Ong; Regina M Santella
Evaluation of oxidative stress in a group of adolescents exposed to a high level of aflatoxin B1--a multi-center and multi-biomarker study.
Carcinogenesis 2007;28(11):2347-54.
2007: Sin-Eng Chia; Safiyya Mohamed Ali; Bee Lan Lee; Gek Hsiang Lim; Su Jin; Nguyen-Viet Dong; Nguyen Thi Hong Tu; Choon-Nam Ong; Kee-Seng Chia
Association of blood lead and homocysteine levels among lead exposed subjects in Vietnam and Singapore.
Occupational and environmental medicine 2007;64(10):688-93.
2007: Guo Dong Lu; Han-Ming Shen; Maxey C M Chung; Choon-Nam Ong
Critical role of oxidative stress and sustained JNK activation in aloe-emodin-mediated apoptotic cell death in human hepatoma cells.
Carcinogenesis 2007;28(9):1937-45.
2007: Qing Huang; Guodong Lu; Han-Ming Shen; Maxey C M Chung; Choon-Nam Ong
Anti-cancer properties of anthraquinones from rhubarb.
Medicinal research reviews 2007;27(5):609-30.
2007: Guo Dong Lu; Han-Ming Shen; Choon-Nam Ong; Maxey C M Chung
Anticancer effects of aloe-emodin on HepG2 cells: Cellular and proteomic studies.
Proteomics. Clinical applications 2007;1(4):410-9.
2007: Ranxin Shi; Qing Huang; Xinqiang Zhu; Yeong-Bing Ong; Bin Zhao; Jia Lu; Choon-Nam Ong; Han-Ming Shen
Luteolin sensitizes the anticancer effect of cisplatin via c-Jun NH2-terminal kinase-mediated p53 phosphorylation and stabilization.
Molecular cancer therapeutics 2007;6(4):1338-47.
2007: Hong-Yan Du; Malini Olivo; Ratha Mahendran; Qing Huang; Han-Ming Shen; Choon-Nam Ong; Boon-Huat Bay
Hypericin photoactivation triggers down-regulation of matrix metalloproteinase-9 expression in well-differentiated human nasopharyngeal cancer cells.
Cellular and molecular life sciences : CMLS 2007;64(7-8):979-88.
2007: Jia-Ping Lai; Yew Heng Lim; Jin Su; Han-Ming Shen; Choon-Nam Ong
Identification and characterization of major flavonoids and caffeoylquinic acids in three Compositae plants by LC/DAD-APCI/MS.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2007;848(2):215-25.
2007: Tao Peng; Le-Qun Li; Min-Hao Peng; Zhi-Ming Liu; Tang-Wei Liu; Lu-Nan Yan; Han-Ming Shen; LianWen Wang; Qiao Wang; Kai-bo Wang; Ren-Xiang Liang; Zong-Liang Wei; Choon-Nam Ong; Regina M Santella
Is correction for protein concentration appropriate for protein adduct dosimetry? Hypothesis and clues from an aflatoxin B1-exposed population.
Cancer science 2007;98(2):140-6.
2007: Eng Shi Ong; Choon-Nam Ong
Qualitative and quantitative analysis of toosendanin in Melia toosendan Sieb. Et Zucc (Meliaceae) with liquid chromatography/tandem mass spectrometry.
Rapid communications in mass spectrometry : RCM 2007;21(4):589-98.
2006: Siyuan Zhang; Zhi Li; Ximei Wu; Qing Huang; Han-Ming Shen; Choon-Nam Ong
Methyl-3-indolylacetate inhibits cancer cell invasion by targeting the MEK1/2-ERK1/2 signaling pathway.
Molecular cancer therapeutics 2006;5(12):3285-93.
2006: Jing Zhou; Siyuan Zhang; Choon-Nam Ong; Han-Ming Shen
Critical role of pro-apoptotic Bcl-2 family members in andrographolide-induced apoptosis in human cancer cells.
Biochemical pharmacology 2006;72(2):132-44.
2006: Qing Huang; Han-Ming Shen; Guanghou Shui; Markus R Wenk; Choon-Nam Ong
Emodin inhibits tumor cell adhesion through disruption of the membrane lipid Raft-associated integrin signaling pathway.
Cancer research 2006;66(11):5807-15.
2006: Xuezhi Bi; Qingsong Lin; Tet Wei Foo; Shashikant Joshi; Tao You; Han-Ming Shen; Choon-Nam Ong; Peh Yean Cheah; Kong-Weng Eu; Choy L Hew
Proteomic analysis of colorectal cancer reveals alterations in metabolic pathways: mechanism of tumorigenesis.
Molecular & cellular proteomics : MCP 2006;5(6):1119-30.
2006: Jian-Min Yuan; Yu-Tang Gao; Choon-Nam Ong; Ronald K Ross; Mimi C Yu
Prediagnostic level of serum retinol in relation to reduced risk of hepatocellular carcinoma.
Journal of the National Cancer Institute 2006;98(7):482-90.
2005: Peter Rose; Choon-Nam Ong; Matthew Whiteman
Protective effects of Asian green vegetables against oxidant induced cytotoxicity.
World journal of gastroenterology : WJG 2005;11(48):7607-14.
2005: Siyuan Zhang; Han-Ming Shen; Choon-Nam Ong
Down-regulation of c-FLIP contributes to the sensitization effect of 3,3'-diindolylmethane on TRAIL-induced apoptosis in cancer cells.
Molecular cancer therapeutics 2005;4(12):1972-81.
2005: Yen-Kim Won; Choon-Nam Ong; Han-Ming Shen
Parthenolide sensitizes ultraviolet (UV)-B-induced apoptosis via protein kinase C-dependent pathways.
Carcinogenesis 2005;26(12):2149-56.
2005: Peter Rose; Qing Huang; Choon-Nam Ong; Matthew Whiteman
Broccoli and watercress suppress matrix metalloproteinase-9 activity and invasiveness of human MDA-MB-231 breast cancer cells.
Toxicology and applied pharmacology 2005;209(2):105-13.
2005: Ran-Xin Shi; Choon-Nam Ong; Han-Ming Shen
Protein kinase C inhibition and x-linked inhibitor of apoptosis protein degradation contribute to the sensitization effect of luteolin on tumor necrosis factor-related apoptosis-inducing ligand-induced apoptosis in cancer cells.
Cancer research 2005;65(17):7815-23.
2005: Peter Rose; Yen-Kim Won; Choon-Nam Ong; Matthew Whiteman
Beta-phenylethyl and 8-methylsulphinyloctyl isothiocyanates, constituents of watercress, suppress LPS induced production of nitric oxide and prostaglandin E2 in RAW 264.7 macrophages.
Nitric oxide : biology and chemistry / official journal of the Nitric Oxide Society 2005;12(4):237-43.
2005: Siyuan Zhang; Yen-Kim Won; Choon-Nam Ong; Han-Ming Shen
Anti-cancer potential of sesquiterpene lactones: bioactivity and molecular mechanisms.
Current medicinal chemistry. Anti-cancer agents 2005;5(3):239-49.
2005: Qing Huang; Han-Ming Shen; Choon-Nam Ong
Emodin inhibits tumor cell migration through suppression of the phosphatidylinositol 3-kinase-Cdc42/Rac1 pathway.
Cellular and molecular life sciences : CMLS 2005;62(10):1167-75.
2005: Bee Lan Lee; Her Yam Ong; Yeong Bing Ong; Choon-Nam Ong
A sensitive liquid chromatographic method for the spectrophotometric determination of urinary trans,trans-muconic acid.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2005;818(2):277-83.
2005: Jason C H Neo; Peter Rose; Choon-Nam Ong; Maxey C M Chung
beta-Phenylethyl isothiocyanate mediated apoptosis: a proteomic investigation of early apoptotic protein changes.
Proteomics 2005;5(4):1075-82.
2005: David Koh; Meng Kin Lim; Choon-Nam Ong; Sin-Eng Chia
Occupational health response to SARS.
Emerging infectious diseases 2005;11(1):167-8.
2005: Peter Rose; Jeffrey S Armstrong; Yeow Leng Chua; Choon-Nam Ong; Matthew Whiteman
Beta-phenylethyl isothiocyanate mediated apoptosis; contribution of Bax and the mitochondrial death pathway.
The international journal of biochemistry & cell biology 2005;37(1):100-19.
2004: Manav Manav; Jin Su; Kenneth Hughes; Hin-Peng Lee; Choon-Nam Ong
Omega-3 fatty acids and selenium as coronary heart disease risk modifying factors in Asian Indian and Chinese males.
Nutrition (Burbank, Los Angeles County, Calif.) 2004;20(11-12):967-73.
2004: Siyuan Zhang; Zhong-Ning Lin; Chengfeng Yang; Xianglin Shi; Choon-Nam Ong; Han-Ming Shen
Suppressed NF-kappaB and sustained JNK activation contribute to the sensitization effect of parthenolide to TNF-alpha-induced apoptosis in human cancer cells.
Carcinogenesis 2004;25(11):2191-9.
2004: Ran-Xin Shi; Choon-Nam Ong; Han-Ming Shen
Luteolin sensitizes tumor necrosis factor-alpha-induced apoptosis in human tumor cells.
Oncogene 2004;23(46):7712-21.
2004: Bee Lan Lee; Jin Su; Choon-Nam Ong
Monomeric C18 chromatographic method for the liquid chromatographic determination of lipophilic antioxidants in plants.
Journal of chromatography. A 2004;1048(2):263-7.
2004: Siyuan Zhang; Choon-Nam Ong; Han-Ming Shen
Involvement of proapoptotic Bcl-2 family members in parthenolide-induced mitochondrial dysfunction and apoptosis.
Cancer letters 2004;211(2):175-88.
2004: Yen-Kim Won; Choon-Nam Ong; Xianglin Shi; Han-Ming Shen
Chemopreventive activity of parthenolide against UVB-induced skin cancer and its mechanisms.
Carcinogenesis 2004;25(8):1449-58.
2004: Qing Huang; Han-Ming Shen; Choon-Nam Ong
Inhibitory effect of emodin on tumor invasion through suppression of activator protein-1 and nuclear factor-kappaB.
Biochemical pharmacology 2004;68(2):361-71.
2004: Susan T Mashiyama; Chantal Courtemanche; Ilan Elson-Schwab; Jimmy W Crott; Bee Lan Lee; Choon-Nam Ong; Michael Fenech; Bruce N Ames
Uracil in DNA, determined by an improved assay, is increased when deoxynucleosides are added to folate-deficient cultured human lymphocytes.
Analytical biochemistry 2004;330(1):58-69.
2004: Hai-Shu Lin; Andrew Jenner; Choon-Nam Ong; Shan Hong Huang; Matthew Whiteman; Barry Halliwell
A high-throughput and sensitive methodology for the quantification of urinary 8-hydroxy-2'-deoxyguanosine: measurement with gas chromatography-mass spectrometry after single solid-phase extraction.
The Biochemical journal 2004;380(Pt 2):541-8.
2004: Siyuan Zhang; Choon-Nam Ong; Han-Ming Shen
Critical roles of intracellular thiols and calcium in parthenolide-induced apoptosis in human colorectal cancer cells.
Cancer letters 2004;208(2):143-53.
2004: Wei-Yi Ong; Benny Tan; Ning Pan; Andrew Jenner; Matthew Whiteman; Choon-Nam Ong; Frank Watt; Barry Halliwell
Increased iron staining in the cerebral cortex of cholesterol fed rabbits.
Mechanisms of ageing and development 2004;125(4):305-13.
2004: T Green; J Dow; Choon-Nam Ong; Vivian Ng; Her Yam Ong; Z X Zhuang; X F Yang; L Bloemen
Biological monitoring of kidney function among workers occupationally exposed to trichloroethylene.
Occupational and environmental medicine 2004;61(4):312-7.
2003: Bee Lan Lee; Ai-Li New; Choon-Nam Ong
Simultaneous determination of tocotrienols, tocopherols, retinol, and major carotenoids in human plasma.
Clinical chemistry 2003;49(12):2056-66.
2003: Tao Peng; Han-Ming Shen; Zhi-Ming Liu; Lu-Nan Yan; Min-Hao Peng; Le-Qun Li; Ren-Xiang Liang; Zong-Liang Wei; Barry Halliwell; Choon-Nam Ong
Oxidative DNA damage in peripheral leukocytes and its association with expression and polymorphisms of hOGG1: a study of adolescents in a high risk region for hepatocellular carcinoma in China.
World journal of gastroenterology : WJG 2003;9(10):2186-93.
2003: Peter Rose; Matthew Whiteman; S H Huang; Barry Halliwell; Choon-Nam Ong
beta-Phenylethyl isothiocyanate-mediated apoptosis in hepatoma HepG2 cells.
Cellular and molecular life sciences : CMLS 2003;60(7):1489-503.
2003: De-Xiang Xu; Qi-Xing Zhu; Lü-Kang Zheng; Qu-Nan Wang; Han-Ming Shen; Li-Xia Deng; Choon-Nam Ong
Exposure to acrylonitrile induced DNA strand breakage and sex chromosome aneuploidy in human spermatozoa.
Mutation research 2003;537(1):93-100.
2003: Peter Rose; Sabine Widder; Jan Looft; Wilhelm Pickenhagen; Choon-Nam Ong; Matthew Whiteman
Inhibition of peroxynitrite-mediated cellular toxicity, tyrosine nitration, and alpha1-antiproteinase inactivation by 3-mercapto-2-methylpentan-1-ol, a novel compound isolated from Allium cepa.
Biochemical and biophysical research communications 2003;302(2):397-402.
2003: De-Xiang Xu; Han-Ming Shen; Qi-Xing Zhu; Laiha Chua; Qu-Nan Wang; Sin-Eng Chia; Choon-Nam Ong
The associations among semen quality, oxidative DNA damage in human spermatozoa and concentrations of cadmium, lead and selenium in seminal plasma.
Mutation research 2003;534(1-2):155-63.
2002: Binh N Trinh; Choon-Nam Ong; Gerhard A Coetzee; Mimi C Yu; Peter W Laird
Thymidylate synthase: a novel genetic determinant of plasma homocysteine and folate levels.
Human genetics 2002;111(3):299-302.
2002: Han-Ming Shen; Wen-Xing Ding; Choon-Nam Ong
Intracellular glutathione is a cofactor in methylseleninic acid-induced apoptotic cell death of human hepatoma HEPG(2) cells.
Free radical biology & medicine 2002;33(4):552-61.
2002: Choon-Nam Ong; Han-Ming Shen; Sin-Eng Chia
Biomarkers for male reproductive health hazards: are they available?
Toxicology letters 2002;134(1-3):17-30.
2002: Jeanette Lee; David Koh; M Andijani; Seang-Mei Saw; Canesio Munoz; Sin-Eng Chia; M L Wong; Ching Ye Hong; Choon-Nam Ong
Effluents from a pulp and paper mill: a skin and health survey of children living in upstream and downstream villages.
Occupational and environmental medicine 2002;59(6):373-9.
2002: Han-Ming Shen; Jun Dai; Sin-Eng Chia; Alvin Lim; Choon-Nam Ong
Detection of apoptotic alterations in sperm in subfertile patients and their correlations with sperm quality.
Human reproduction (Oxford, England) 2002;17(5):1266-73.
2002: Wen-Xing Ding; Han-Ming Shen; Choon-Nam Ong
Calpain activation after mitochondrial permeability transition in microcystin-induced cell death in rat hepatocytes.
Biochemical and biophysical research communications 2002;291(2):321-31.
2002: Kenneth Hughes; Bee Lan Lee; Xiang Feng; Jeanette Lee; Choon-Nam Ong
Coenzyme Q10 and differences in coronary heart disease risk in Asian Indians and Chinese.
Free radical biology & medicine 2002;32(2):132-8.
2001: Wen-Xing Ding; Han-Ming Shen; Choon-Nam Ong
Critical role of reactive oxygen species formation in microcystin-induced cytoskeleton disruption in primary cultured hepatocytes.
Journal of toxicology and environmental health. Part A 2001;64(6):507-19.
2001: S Wasser; G Y Lim; Choon-Nam Ong; Chee Eng Tan
Anti-oxidant ebselen causes the resolution of experimentally induced hepatic fibrosis in rats.
Journal of gastroenterology and hepatology 2001;16(11):1244-53.
2001: J Liu; Han-Ming Shen; Choon-Nam Ong
Role of intracellular thiol depletion, mitochondrial dysfunction and reactive oxygen species in Salvia miltiorrhiza-induced apoptosis in human hepatoma HepG2 cells.
Life sciences 2001;69(16):1833-50.
2001: Wen-Xing Ding; Han-Ming Shen; Choon-Nam Ong
Pivotal role of mitochondrial Ca(2+) in microcystin-induced mitochondrial permeability transition in rat hepatocytes.
Biochemical and biophysical research communications 2001;285(5):1155-61.
2001: Seang-Mei Saw; David Koh; M R Adjani; M L Wong; Ching Ye Hong; Jeanette Lee; Sin-Eng Chia; Canesio Munoz; Choon-Nam Ong
A population-based prevalence survey of skin diseases in adolescents and adults in rural Sumatra, Indonesia, 1999.
Transactions of the Royal Society of Tropical Medicine and Hygiene 2001;95(4):384-8.
2001: J Liu; Chengfeng Yang; S Wasser; Han-Ming Shen; Chee Eng Tan; Choon-Nam Ong
Protection of salvia miltiorrhiza against aflatoxin-B1-induced hepatocarcinogenesis in Fischer 344 rats dual mechanisms involved.
Life sciences 2001;69(3):309-26.
2001: Han-Ming Shen; S Y Dong; Choon-Nam Ong
Critical role of calcium overloading in cadmium-induced apoptosis in mouse thymocytes.
Toxicology and applied pharmacology 2001;171(1):12-9.
2001: Seang-Mei Saw; Jian-Min Yuan; Choon-Nam Ong; K Arakawa; Hin-Peng Lee; Gerhard A Coetzee; Mimi C Yu
Genetic, dietary, and other lifestyle determinants of plasma homocysteine concentrations in middle-aged and older Chinese men and women in Singapore.
The American journal of clinical nutrition 2001;73(2):232-9.
2001: E J C Lee; C C Myint; M E Tay; Norashidah Yusuf; Choon-Nam Ong
Serum ascorbic acid and protein calorie malnutrition in continuous ambulatory peritoneal dialysis patients.
Advances in peritoneal dialysis. Conference on Peritoneal Dialysis 2001;17():219-22.
2001: Siew-Lay Lim; Su Lin Lim; C C Myint; Kang Teng Ong; M E Tay; Norashidah Yusuf; Choon-Nam Ong
Oral intake and serum levels of ascorbic acid in continuous ambulatory peritoneal dialysis patients.
Advances in peritoneal dialysis. Conference on Peritoneal Dialysis 2001;17():215-8.
2001: Han-Ming Shen; Chengfeng Yang; Wen-Xing Ding; J Liu; Choon-Nam Ong
Superoxide radical-initiated apoptotic signalling pathway in selenite-treated HepG(2) cells: mitochondria serve as the main target.
Free radical biology & medicine 2001;30(1):9-21.
2001: Han-Ming Shen; Z Zhang; Q F Zhang; Choon-Nam Ong
Reactive oxygen species and caspase activation mediate silica-induced apoptosis in alveolar macrophages.
American journal of physiology. Lung cellular and molecular physiology 2001;280(1):L10-7.
2000: Chengfeng Yang; J Liu; S Wasser; Han-Ming Shen; Chee Eng Tan; Choon-Nam Ong
Inhibition of ebselen on aflatoxin B(1)-induced hepatocarcinogenesis in Fischer 344 rats.
Carcinogenesis 2000;21(12):2237-43.
2000: Wen-Xing Ding; Han-Ming Shen; Choon-Nam Ong
Critical role of reactive oxygen species and mitochondrial permeability transition in microcystin-induced rapid apoptosis in rat hepatocytes.
Hepatology (Baltimore, Md.) 2000;32(3):547-55.
2000: Chengfeng Yang; Han-Ming Shen; Choon-Nam Ong
Intracellular thiol depletion causes mitochondrial permeability transition in ebselen-induced apoptosis.
Archives of biochemistry and biophysics 2000;380(2):319-30.
2000: Wen-Xing Ding; Han-Ming Shen; Choon-Nam Ong
Microcystic cyanobacteria extract induces cytoskeletal disruption and intracellular glutathione alteration in hepatocytes.
Environmental health perspectives 2000;108(7):605-9.
2000: Bee Lan Lee; Choon-Nam Ong
Comparative analysis of tea catechins and theaflavins by high-performance liquid chromatography and capillary electrophoresis.
Journal of chromatography. A 2000;881(1-2):439-47.
2000: J Liu; Han-Ming Shen; Choon-Nam Ong
Salvia miltiorrhiza inhibits cell growth and induces apoptosis in human hepatoma HepG(2) cells.
Cancer letters 2000;153(1-2):85-93.
2000: B Qu; Barry Halliwell; Choon-Nam Ong; B L Lee; Qiu-Tian Li
Caloric restriction prevents oxidative damage induced by the carcinogen clofibrate in mouse liver.
FEBS letters 2000;473(1):85-8.
2000: Chengfeng Yang; J Liu; Han-Ming Shen; Choon-Nam Ong
Protective effect of ebselen on aflatoxin B1-induced cytotoxicity in primary rat hepatocytes.
Pharmacology & toxicology 2000;86(4):156-61.
2000: Chengfeng Yang; Han-Ming Shen; Choon-Nam Ong
Ebselen induces apoptosis in HepG(2) cells through rapid depletion of intracellular thiols.
Archives of biochemistry and biophysics 2000;374(2):142-52.
2000: Kenneth Hughes; Choon-Nam Ong
Homocysteine, folate, vitamin B12, and cardiovascular risk in Indians, Malays, and Chinese in Singapore.
Journal of epidemiology and community health 2000;54(1):31-4.
2000: Sin-Eng Chia; Choon-Nam Ong; L H Chua; L M Ho; Stacey K H Tay
Comparison of zinc concentrations in blood and seminal plasma and the various sperm parameters between fertile and infertile men.
Journal of andrology 2000;21(1):53-7.
1999: J Liu; Chengfeng Yang; B L Lee; Han-Ming Shen; S G Ang; Choon-Nam Ong
Effect of Salvia miltiorrhiza on aflatoxin B1-induced oxidative stress in cultured rat hepatocytes.
Free radical research 1999;31(6):559-68.
1999: T W Yu; Choon-Nam Ong
Lag-time measurement of antioxidant capacity using myoglobin and 2, 2'-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid): rationale, application, and limitation.
Analytical biochemistry 1999;275(2):217-23.
1999: David Koh; Adeline Seow; Choon-Nam Ong
Applications of new technology in molecular epidemiology and their relevance to occupational medicine.
Occupational and environmental medicine 1999;56(11):725-9.
1999: Han-Ming Shen; Sin-Eng Chia; Choon-Nam Ong
Evaluation of oxidative DNA damage in human sperm and its association with male infertility.
Journal of andrology 1999;20(6):718-23.
1999: B Qu; Qiu-Tian Li; Kim Ping Wong; Choon-Nam Ong; Barry Halliwell
Mitochondrial damage by the "pro-oxidant" peroxisomal proliferator clofibrate.
Free radical biology & medicine 1999;27(9-10):1095-102.
1999: Vivian Ng; David Koh; G Chan; Her Yam Ong; Sin-Eng Chia; Choon-Nam Ong
Are salivary immunoglobulin A and lysozyme biomarkers of stress among nurses?
Journal of occupational and environmental medicine / American College of Occupational and Environmental Medicine 1999;41(10):920-7.
1999: Choon-Nam Ong
Reference values and action levels of biological monitoring in occupational exposure.
Toxicology letters 1999;108(2-3):127-35.
1999: Wen-Xing Ding; Han-Ming Shen; HG Zhu; B L Lee; Choon-Nam Ong
Genotoxicity of microcystic cyanobacteria extract of a water source in China.
Mutation research 1999;442(2):69-77.
1999: Han-Ming Shen; Chengfeng Yang; Choon-Nam Ong
Sodium selenite-induced oxidative stress and apoptosis in human hepatoma HepG2 cells.
International journal of cancer. Journal international du cancer 1999;81(5):820-8.
1999: Chengfeng Yang; Han-Ming Shen; Choon-Nam Ong
Protective effect of ebselen against hydrogen peroxide-induced cytotoxicity and DNA damage in HepG2 cells.
Biochemical pharmacology 1999;57(3):273-9.
1998: Kenneth Hughes; L H Chua; Choon-Nam Ong
Serum selenium in the general population of Singapore, 1993 to 1995.
Annals of the Academy of Medicine, Singapore 1998;27(4):520-3.
1998: Wen-Xing Ding; Han-Ming Shen; Y Shen; HG Zhu; Choon-Nam Ong
Microcystic cyanobacteria causes mitochondrial membrane potential alteration and reactive oxygen species formation in primary cultured rat hepatocytes.
Environmental health perspectives 1998;106(7):409-13.
1998: Wen-Xing Ding; Han-Ming Shen; HG Zhu; Choon-Nam Ong
Studies on oxidative damage induced by cyanobacteria extract in primary cultured rat hepatocytes.
Environmental research 1998;78(1):12-8.
1998: Kenneth Hughes; MH Choo; P Kuperan; Choon-Nam Ong; Tar-Choon Aw
Cardiovascular risk factors in relation to cigarette smoking: a population-based survey among Asians in Singapore.
Atherosclerosis 1998;137(2):253-8.
1998: Kenneth Hughes; A L New; Bee Lan Lee; Choon-Nam Ong
Plasma vitamins A, C and E in the general population of Singapore, 1993 to 1995.
Annals of the Academy of Medicine, Singapore 1998;27(2):149-53.
1998: Kenneth Hughes; Choon-Nam Ong
Vitamins, selenium, iron, and coronary heart disease risk in Indians, Malays, and Chinese in Singapore.
Journal of epidemiology and community health 1998;52(3):181-5.
1998: Lingbao Ai; L H Chua; A L New; Bee Lan Lee; Y M Liu; Sin-Eng Chia; Choon-Nam Ong
Urinary homovanillic acid (HVA) and vanillymandelic acid (VMA) in workers exposed to manganese dust.
Biological trace element research 1998;64(1-3):89-99.
1998: Kenneth Hughes; MH Choo; P Kuperan; Choon-Nam Ong; Tar-Choon Aw
Cardiovascular risk factors in non-insulin-dependent diabetics compared to non-diabetic controls: a population-based survey among Asians in Singapore.
Atherosclerosis 1998;136(1):25-31.
1998: Victor H H Goh; Sin-Eng Chia; Choon-Nam Ong
Effects of chronic exposure to low doses of trichloroethylene on steroid hormone and insulin levels in normal men.
Environmental health perspectives 1998;106(1):41-4.
1997: Bee Lan Lee; A L New; Choon-Nam Ong
Comparative analysis of conjugated bile acids in human serum using high-performance liquid chromatography and capillary electrophoresis.
Journal of chromatography. B, Biomedical sciences and applications 1997;704(1-2):35-42.
1997: Z Y Ni; Y Q Liu; Han-Ming Shen; Sin-Eng Chia; Choon-Nam Ong
Does the increase of 8-hydroxydeoxyguanosine lead to poor sperm quality?
Mutation research 1997;381(1):77-82.
1997: David Koh; Bee Lan Lee; Her Yam Ong; Choon-Nam Ong
Colophony in topical traditional Chinese medicaments.
Contact dermatitis 1997;37(5):243.
1997: Han-Ming Shen; Sin-Eng Chia; Z Y Ni; A L New; B L Lee; Choon-Nam Ong
Detection of oxidative DNA damage in human sperm and the association with cigarette smoking.
Reproductive toxicology (Elmsford, N.Y.) 1997;11(5):675-80.
1997: Sin-Eng Chia; Victor H H Goh; Choon-Nam Ong
Endocrine profiles of male workers with exposure to trichloroethylene.
American journal of industrial medicine 1997;32(3):217-22.
1997: Chengfeng Yang; Han-Ming Shen; Y Shen; Z X Zhuang; Choon-Nam Ong
Cadmium-induced oxidative cellular damage in human fetal lung fibroblasts (MRC-5 cells).
Environmental health perspectives 1997;105(7):712-6.
1997: J Wu; C Y Zhou; M K Wong; H K Lee; Choon-Nam Ong
Urine levels of aluminum after drinking tea.
Biological trace element research 1997;57(3):271-80.
1997: Bee Lan Lee; David Koh; Her Yam Ong; Choon-Nam Ong
High-performance liquid chromatographic determination of dehydroabietic and abietic acids in traditional Chinese medications.
Journal of chromatography. A 1997;763(1-2):221-6.
1996: Z X Zhuang; Y Shen; Han-Ming Shen; V Ng; Choon-Nam Ong
DNA strand breaks and poly (ADP-ribose) polymerase activation induced by crystalline nickel subsulfide in MRC-5 lung fibroblast cells.
Human & experimental toxicology 1996;15(11):891-7.
1996: Sin-Eng Chia; Kee-Seng Chia; H P Chia; Choon-Nam Ong; J Jeyaratnam
Three-year follow-up of serial nerve conduction among lead-exposed workers.
Scandinavian journal of work, environment & health 1996;22(5):374-80.
1996: Han-Ming Shen; Choon-Nam Ong
Mutations of the p53 tumor suppressor gene and ras oncogenes in aflatoxin hepatocarcinogenesis.
Mutation research 1996;366(1):23-44.
1996: Bee Lan Lee; L H Chua; Her Yam Ong; H G Yang; J Wu; Choon-Nam Ong
Determination of serum and urinary aluminum by HPLC with fluorometric detection of Al-lumogallion complex.
Clinical chemistry 1996;42(9):1405-11.
1996: Sin-Eng Chia; Choon-Nam Ong; M F Tsakok; A Ho
Semen parameters in workers exposed to trichloroethylene.
Reproductive toxicology (Elmsford, N.Y.) 1996;10(4):295-9.
1996: Chun Chau Sze; CY Shi; Choon-Nam Ong
Cytotoxicity and DNA strand breaks induced by benzene and its metabolites in Chinese hamster ovary cells.
Journal of applied toxicology : JAT 1996;16(3):259-64.
1996: Y Shen; Han-Ming Shen; CY Shi; Choon-Nam Ong
Benzene metabolites enhance reactive oxygen species generation in HL60 human leukemia cells.
Human & experimental toxicology 1996;15(5):422-7.
1996: Choon-Nam Ong; P W Kok; Her Yam Ong; CY Shi; Bee Lan Lee; W H Phoon; K T Tan
Biomarkers of exposure to low concentrations of benzene: a field assessment.
Occupational and environmental medicine 1996;53(5):328-33.
1996: Sin-Eng Chia; H P Chia; Choon-Nam Ong; J Jeyaratnam
Cumulative concentrations of blood lead and postural stability.
Occupational and environmental medicine 1996;53(4):264-8.
1996: X F Yang; Bee Lan Lee; A L New; Her Yam Ong; L Ma; Q Zhang; Choon-Nam Ong
Urinary homovanillic acid and vanillylmandelic acid in workers exposed to carbon disulfide.
American journal of industrial medicine 1996;29(3):269-74.
1996: Sin-Eng Chia; H P Chia; Choon-Nam Ong; J Jeyaratnam
Cumulative blood lead levels and nerve conduction parameters.
Occupational medicine (Oxford, England) 1996;46(1):59-64.
1996: Han-Ming Shen; CY Shi; Y Shen; Choon-Nam Ong
Detection of elevated reactive oxygen species level in cultured rat hepatocytes treated with aflatoxin B1.
Free radical biology & medicine 1996;21(2):139-46.
1996: CY Shi; Adeline Seow; Y Lin; Kee-Seng Chia; Choon-Nam Ong; Soh Ha Chan; Hin-Peng Lee
Biomarkers: a molecular approach to cancer epidemiology.
Annals of the Academy of Medicine, Singapore 1996;25(1):49-54.
1995: Choon-Nam Ong; P W Kok; Bee Lan Lee; CY Shi; Her Yam Ong; Kee-Seng Chia; C S Lee; X W Luo
Evaluation of biomarkers for occupational exposure to benzene.
Occupational and environmental medicine 1995;52(8):528-33.
1995: CY Shi; T W Phang; Y Lin; Aileen Wee; B Li; Hin-Peng Lee; Choon-Nam Ong
Codon 249 mutation of the p53 gene is a rare event in hepatocellular carcinomas from ethnic Chinese in Singapore.
British journal of cancer 1995;72(1):146-9.
1995: Bee Lan Lee; X F Yang; A L New; Choon-Nam Ong
Liquid chromatographic determination of urinary 2-thiothiazolidine-4-carboxylic acid, a biomarker of carbon disulphide exposure.
Journal of chromatography. B, Biomedical applications 1995;668(2):265-72.
1995: Kee-Seng Chia; J Jeyaratnam; J Lee; C Tan; Her Yam Ong; Choon-Nam Ong; E Lee
Lead-induced nephropathy: relationship between various biological exposure indices and early markers of nephrotoxicity.
American journal of industrial medicine 1995;27(6):883-95.
1995: Han-Ming Shen; Choon-Nam Ong; CY Shi
Involvement of reactive oxygen species in aflatoxin B1-induced cell injury in cultured rat hepatocytes.
Toxicology 1995;99(1-2):115-23.
1995: Kee-Seng Chia; J Jeyaratnam; C Tan; Her Yam Ong; Choon-Nam Ong; E Lee
Glomerular function of lead-exposed workers.
Toxicology letters 1995;77(1-3):319-28.
1995: David Koh; Bee Lan Lee; Her Yam Ong; Choon-Nam Ong; W K Wong; S K Ng; Chee-Leok Goh
Colophony in bindi adhesive.
Contact dermatitis 1995;32(3):186.
1995: CY Shi; T W Phang; Aileen Wee; Sing Shang Ngoi; Y Lin; B Li; Choon-Nam Ong; Hin-Peng Lee
Mutations of the tumour suppressor gene p53 in colorectal and hepatocellular carcinomas.
Annals of the Academy of Medicine, Singapore 1995;24(2):204-10.
1995: Han-Ming Shen; Choon-Nam Ong; Bee Lan Lee; CY Shi
Aflatoxin B1-induced 8-hydroxydeoxyguanosine formation in rat hepatic DNA.
Carcinogenesis 1995;16(2):419-22.
1995: Choon-Nam Ong; Sin-Eng Chia; J Jeyaratnam; K C Tan
Musculoskeletal disorders among operators of visual display terminals.
Scandinavian journal of work, environment & health 1995;21(1):60-4.
1995: J Wu; C Y Zhou; H Chi; M K Wong; H K Lee; Her Yam Ong; Choon-Nam Ong
Determination of serum aluminium using an ion-pair reversed-phase high-performance liquid chromatographic-fluorimetric system with lumogallion.
Journal of chromatography. B, Biomedical applications 1995;663(2):247-53.
1995: CY Shi; Y C Hew; Choon-Nam Ong
Inhibition of aflatoxin B1-induced cell injury by selenium: an in vitro study.
Human & experimental toxicology 1995;14(1):55-60.
1994: CY Shi; T W Phang; Sing Shang Ngoi; Aileen Wee; B Li; Y Lin; Hin-Peng Lee; Choon-Nam Ong
Characterization of p53 gene mutations in colorectal carcinomas from an Asian population.
Anticancer research 1994;14(6B):2811-6.
1994: Sin-Eng Chia; Choon-Nam Ong; F M Tsakok
Effects of cigarette smoking on human semen quality.
Archives of andrology 1994;33(3):163-8.
1994: Choon-Nam Ong; Bee Lan Lee; CY Shi; Her Yam Ong; Hin-Peng Lee
Elevated levels of benzene-related compounds in the urine of cigarette smokers.
International journal of cancer. Journal international du cancer 1994;59(2):177-80.
1994: Choon-Nam Ong; Bee Lan Lee
Determination of benzene and its metabolites: application in biological monitoring of environmental and occupational exposure to benzene.
Journal of chromatography. B, Biomedical applications 1994;660(1):1-22.
1994: Sin-Eng Chia; J Jeyaratnam; Choon-Nam Ong; Tze Pin Ng; H S Lee
Impairment of color vision among workers exposed to low concentrations of styrene.
American journal of industrial medicine 1994;26(4):481-8.
1994: Kee-Seng Chia; Antonio Mutti; R Alinovi; J Jeyaratnam; C Tan; Choon-Nam Ong; E Lee
Urinary excretion of tubular brush-border antigens among lead exposed workers.
Annals of the Academy of Medicine, Singapore 1994;23(5):655-9.
1994: Sin-Eng Chia; Choon-Nam Ong; S T Lee; F H Tsakok
Study of the effects of occupation and industry on sperm quality.
Annals of the Academy of Medicine, Singapore 1994;23(5):645-9.
1994: Sin-Eng Chia; B Xu; Choon-Nam Ong; F M Tsakok; S T Lee
Effect of cadmium and cigarette smoking on human semen quality.
International journal of fertility and menopausal studies 1994;39(5):292-8.
1994: T W Phang; CY Shi; J N Chia; Choon-Nam Ong
Amplification of cDNA via RT-PCR using RNA extracted from postmortem tissues.
Journal of forensic sciences 1994;39(5):1275-9.
1994: David Koh; Choon-Nam Ong; J Jeyaratnam
The safe use of visual display units.
Singapore medical journal 1994;35(4):381-5.
1994: CY Shi; S C Chua; Hin-Peng Lee; Choon-Nam Ong
Inhibition of aflatoxin B1-DNA binding and adduct formation by selenium in rats.
Cancer letters 1994;82(2):203-8.
1994: Han-Ming Shen; CY Shi; Hin-Peng Lee; Choon-Nam Ong
Aflatoxin B1-induced lipid peroxidation in rat liver.
Toxicology and applied pharmacology 1994;127(1):145-50.
1994: Choon-Nam Ong; CY Shi; Sin-Eng Chia; S C Chua; Her Yam Ong; Bee Lan Lee; Tze Pin Ng; K Teramoto
Biological monitoring of exposure to low concentrations of styrene.
American journal of industrial medicine 1994;25(5):719-30.
1994: Kee-Seng Chia; Antonio Mutti; C Tan; Her Yam Ong; J Jeyaratnam; Choon-Nam Ong; E Lee
Urinary N-acetyl-beta-D-glucosaminidase activity in workers exposed to inorganic lead.
Occupational and environmental medicine 1994;51(2):125-9.
1994: CY Shi; S C Chua; Bee Lan Lee; Her Yam Ong; J Jeyaratnam; Choon-Nam Ong
Kinetics of styrene urinary metabolites: a study in a low-level occupational exposure setting in Singapore.
International archives of occupational and environmental health 1994;65(5):319-23.
1994: Choon-Nam Ong
Musculoskeletal disorders in operators of visual display terminals.
World health forum 1994;15(2):161-4.
1994: P W Kok; Choon-Nam Ong
Blood and urinary benzene determined by headspace gas chromatography with photoionization detection: application in biological monitoring of low-level nonoccupational exposure.
International archives of occupational and environmental health 1994;66(3):195-201.
1994: B Xu; Sin-Eng Chia; Choon-Nam Ong
Concentrations of cadmium, lead, selenium, and zinc in human blood and seminal plasma.
Biological trace element research 1994;40(1):49-57.
1993: B Xu; Sin-Eng Chia; M Tsakok; Choon-Nam Ong
Trace elements in blood and seminal plasma and their relationship to sperm quality.
Reproductive toxicology (Elmsford, N.Y.) 1993;7(6):613-8.
1993: Bee Lan Lee; Her Yam Ong; CY Shi; Choon-Nam Ong
Simultaneous determination of hydroquinone, catechol and phenol in urine using high-performance liquid chromatography with fluorimetric detection.
Journal of chromatography 1993;619(2):259-66.
1993: Bee Lan Lee; A L New; P W Kok; Her Yam Ong; CY Shi; Choon-Nam Ong
Urinary trans,trans-muconic acid determined by liquid chromatography: application in biological monitoring of benzene exposure.
Clinical chemistry 1993;39(9):1788-92.
1993: Choon-Nam Ong; David Koh; SC Foo; P W Kok; Her Yam Ong; Tar-Ching Aw
Volatile organic solvents in correction fluids: identification and potential hazards.
Bulletin of environmental contamination and toxicology 1993;50(6):787-93.
1993: S C Chua; Bee Lan Lee; L S Liau; Choon-Nam Ong
Determination of mandelic acid and phenylglyoxylic acid in the urine and its use in monitoring of styrene exposure.
Journal of analytical toxicology 1993;17(3):129-32.
1993: L S Liau; Bee Lan Lee; A L New; Choon-Nam Ong
Determination of plasma ascorbic acid by high-performance liquid chromatography with ultraviolet and electrochemical detection.
Journal of chromatography 1993;612(1):63-70.
1993: Choon-Nam Ong; Sin-Eng Chia; SC Foo; Her Yam Ong; M Tsakok; P Liouw
Concentrations of heavy metals in maternal and umbilical cord blood.
Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine 1993;6(1):61-6.
1993: Choon-Nam Ong; J Jeyaratnam; D Koh
Factors influencing the assessment and control of occupational hazards in developing countries.
Environmental research 1993;60(1):112-23.
1993: SC Foo; N Y Khoo; A Heng; L H Chua; Sin-Eng Chia; Choon-Nam Ong; C H Ngim; J Jeyaratnam
Metals in hair as biological indices for exposure.
International archives of occupational and environmental health 1993;65(1 Suppl):S83-6.
1993: Sin-Eng Chia; Choon-Nam Ong; W H Phoon; K T Tan; J Jeyaratnam
Neurobehavioural effects on workers in a video tape manufacturing factory in Singapore.
Neurotoxicology 1993;14(1):51-6.
1992: S E Chia; Choon-Nam Ong; S C Foo; H P Lee
Medical students' exposure to formaldehyde in a gross anatomy dissection laboratory.
Journal of American college health : J of ACH 1992;41(3):115-9.
1992: Kee-Seng Chia; A L Tan; Sin-Eng Chia; Choon-Nam Ong; J Jeyaratnam
Renal tubular function of cadmium exposed workers.
Annals of the Academy of Medicine, Singapore 1992;21(6):756-9.
1992: Bee Lan Lee; S C Chua; Her Yam Ong; Choon-Nam Ong
High-performance liquid chromatographic method for routine determination of vitamins A and E and beta-carotene in plasma.
Journal of chromatography 1992;581(1):41-7.
1992: Mee Lian Wong; Choon-Nam Ong; T C Tan; K H Phua; Lee Gan Goh; K Koh; Hin-Peng Lee; S Chawalit; M Orapun
Sudden unexplained death syndrome. A review and update.
Tropical and geographical medicine 1992;44(4):S1-19.
1992: Sin-Eng Chia; Choon-Nam Ong; S T Lee; F H Tsakok
Blood concentrations of lead, cadmium, mercury, zinc, and copper and human semen parameters.
Archives of andrology 1992;29(2):177-83.
1992: Muruga Vadivale; T C Tan; Choon-Nam Ong
Sero-prevalence of hepatitis B infection among dental professionals.
Singapore medical journal 1992;33(4):367-9.
1992: Choon-Nam Ong; L S Liau; Her Yam Ong
Separation of globins using free zone capillary electrophoresis.
Journal of chromatography 1992;576(2):346-50.
1992: T C Tan; Muruga Vadivale; Choon-Nam Ong
Prevalence of hepatitis B surface antigen and antibody among health care employees in Negri Sembilan, Malaysia, 1989.
Asia-Pacific journal of public health / Asia-Pacific Academic Consortium for Public Health 1992;6(3):134-9.
1991: Choon-Nam Ong
Ergonomics and health concerns of using VDU.
Journal of human ergology 1991;20(2):166-8.
1991: Choon-Nam Ong; Sin-Eng Chia; W H Phoon; K T Tan; P W Kok
Monitoring of exposure to cyclohexanone through the analysis of breath and urine.
Scandinavian journal of work, environment & health 1991;17(6):430-5.
1991: Sin-Eng Chia; Kee-Seng Chia; Choon-Nam Ong
Ethnic differences in blood lead concentration among workers in a battery manufacturing factory.
Annals of the Academy of Medicine, Singapore 1991;20(6):758-61.
1991: Choon-Nam Ong; S E Chia; W H Phoon; K T Tan
Biological monitoring of occupational exposure to tetrahydrofuran.
British journal of industrial medicine 1991;48(9):616-21.
1991: Tze Pin Ng; HH Goh; Y L Ng; Her Yam Ong; Choon-Nam Ong; Kee-Seng Chia; S E Chia; J Jeyaratnam
Male endocrine functions in workers with moderate exposure to lead.
British journal of industrial medicine 1991;48(7):485-91.
1991: Bee Lan Lee; Her Yam Ong; Choon-Nam Ong
Determination of thiamine and its phosphate esters by gradient-elution high-performance liquid chromatography.
Journal of chromatography 1991;567(1):71-80.
1991: SC Foo; J Jeyaratnam; Choon-Nam Ong; N Y Khoo; David Koh; Sin-Eng Chia
Biological monitoring for occupational exposure to toluene.
American Industrial Hygiene Association journal 1991;52(5):212-7.
1991: Choon-Nam Ong; G L Sia; Sin-Eng Chia; W H Phoon; K T Tan
Determination of cyclohexanol in urine and its use in environmental monitoring of cyclohexanone exposure.
Journal of analytical toxicology 1991;15(1):13-6.
1991: Choon-Nam Ong; G L Sia; Her Yam Ong; W H Phoon; K T Tan
Biological monitoring of occupational exposure to methyl ethyl ketone.
International archives of occupational and environmental health 1991;63(5):319-24.
1990: Choon-Nam Ong; M M Thein; U Berquist
A review of adverse effects on reproduction amongst female computer terminal workers.
Annals of the Academy of Medicine, Singapore 1990;19(5):649-55.
1990: David Koh; Chee-Leok Goh; J Jeyaratnam; W C Kee; Choon-Nam Ong
Dermatological symptoms among visual display unit operators using plasma display and cathode ray tube screens.
Annals of the Academy of Medicine, Singapore 1990;19(5):617-20.
1990: K H Phua; Lee Gan Goh; K Koh; Choon-Nam Ong; T C Tan; Mee Lian Wong; Hin-Peng Lee
Thiamine deficiency and sudden deaths: lessons from the past.
Lancet 1990;335(8703):1471-2.
1990: Choon-Nam Ong; K Kogi
Shiftwork in developing countries: current issues and trends.
Occupational medicine (Philadelphia, Pa.) 1990;5(2):417-28.
1990: Choon-Nam Ong; L H Chua; K Teramoto
Biological monitoring of workers exposed to lead stearate.
Journal of applied toxicology : JAT 1990;10(1):65-8.
1990: Choon-Nam Ong; L H Chua; Bee Lan Lee; Her Yam Ong; Kee-Seng Chia
Electrothermal atomic absorption spectrometric determination of cadmium and nickel in urine.
Journal of analytical toxicology 1990;14(1):29-33.
1990: Choon-Nam Ong; Y M Kong; Her Yam Ong; K Teramoto
The in vitro and in vivo effects of lead on delta-aminolevulinic acid dehydratase and pyrimidine 5'-nucleotidase.
Pharmacology & toxicology 1990;66(1):23-6.
1990: Tze Pin Ng; S G Ong; W K Lam; M G Jones; C K Cheung; Choon-Nam Ong
Urinary levels of proteins and metabolites in workers exposed to toluene. A cross-sectional study.
International archives of occupational and environmental health 1990;62(1):43-6.
1989: Bee Lan Lee; Kee-Seng Chia; Choon-Nam Ong
Measurement of urinary free catecholamines using high-performance liquid chromatography with electrochemical detection.
Journal of chromatography 1989;494():303-9.
1989: Kee-Seng Chia; Choon-Nam Ong; Her Yam Ong; G Endo
Renal tubular function of workers exposed to low levels of cadmium.
British journal of industrial medicine 1989;46(3):165-70.
1989: Choon-Nam Ong; Kee-Seng Chia; David Koh; K Saijoh
Neurochemical effect of lead exposure: a study on catecholamine metabolism.
American journal of industrial medicine 1989;16(6):667-73.
1988: David Koh; S Guanco-Chua; Choon-Nam Ong
A study of the mortality patterns of taxi drivers in Singapore.
Annals of the Academy of Medicine, Singapore 1988;17(4):579-82.
1988: Choon-Nam Ong; Her Yam Ong; L H Chua
Determination of copper and zinc in serum and whole blood by ion chromatography.
Analytical biochemistry 1988;173(1):64-9.
1988: Choon-Nam Ong; Bee Lan Lee; Her Yam Ong; L E Heng
Determination of urinary phenol by acid hydrolysis and capillary gas chromatography.
Journal of analytical toxicology 1988;12(3):159-61.
1987: Choon-Nam Ong; Bee Lan Lee; Her Yam Ong; E Jaecob
Simple high-performance liquid chromatographic method for the simultaneous measurement of vanillylmandelic acid and homovanillic acid.
Journal of chromatography 1987;423():278-84.
1987: Kee-Seng Chia; W O Phoon; Choon-Nam Ong; David Koh
Transit time analysis of the forced expiratory spirogram of fire-fighters.
Annals of the Academy of Medicine, Singapore 1987;16(2):324-7.
1987: Choon-Nam Ong; W O Phoon; N Iskandar; Kee-Seng Chia
Shiftwork and work injuries in an iron and steel mill.
Applied ergonomics 1987;18(1):51-6.
1987: W O Phoon; Choon-Nam Ong; S C Foo; Kee-Seng Chia
Health risk appraisal by ventilatory capacity.
Asia-Pacific journal of public health / Asia-Pacific Academic Consortium for Public Health 1987;1(1):56-60.
1985: Choon-Nam Ong; B L Lee; SC Foo; Her Yam Ong; L H Chua
Specific gravity adjustment for urinary analysis of delta-aminolevulinic acid.
American Industrial Hygiene Association journal 1985;46(8):B10, B12.
1985: Choon-Nam Ong; W O Phoon; H Y Law; C Y Tye; H H Lim
Concentrations of lead in maternal blood, cord blood, and breast milk.
Archives of disease in childhood 1985;60(8):756-9.
1985: H H Lim; Choon-Nam Ong; Z Domala; W O Phoon; H E Khoo
Blood lead levels in Malaysian urban and rural pregnant women.
Public health 1985;99(1):23-9.
1984: W O Phoon; Choon-Nam Ong; S C Foo; W Plueksawan
An epidemiological study of lung functions and hearing acuity in Singapore firemen.
Annals of the Academy of Medicine, Singapore 1984;13(2 Suppl):408-16.
1983: W O Phoon; Choon-Nam Ong; S C Foo; W Plueksawan
A cross sectional study on the health of fire fighters in Singapore.
Sangyō igaku. Japanese journal of industrial health 1983;25(6):463-70.
1983: H H Lim; Choon-Nam Ong; Z Domala; W O Phoon
Blood cadmium levels in Malaysian pregnant women.
The Southeast Asian journal of tropical medicine and public health 1983;14(3):394-8.