Ah Siew Sim

2.1k total citations
17 papers, 1.7k citations indexed

About

Ah Siew Sim is a scholar working on Physiology, Molecular Biology and Cardiology and Cardiovascular Medicine. According to data from OpenAlex, Ah Siew Sim has authored 17 papers receiving a total of 1.7k indexed citations (citations by other indexed papers that have themselves been cited), including 9 papers in Physiology, 5 papers in Molecular Biology and 5 papers in Cardiology and Cardiovascular Medicine. Recurrent topics in Ah Siew Sim's work include Nitric Oxide and Endothelin Effects (8 papers), Glutathione Transferases and Polymorphisms (4 papers) and Folate and B Vitamins Research (4 papers). Ah Siew Sim is often cited by papers focused on Nitric Oxide and Endothelin Effects (8 papers), Glutathione Transferases and Polymorphisms (4 papers) and Folate and B Vitamins Research (4 papers). Ah Siew Sim collaborates with scholars based in Australia, United States and United Kingdom. Ah Siew Sim's co-authors include Xing L. Wang, David E.L. Wilcken, R. M. McCredie, D. E. L. Wilcken, Renee F. Badenhop, Xing Li Wang, Daya Naidoo, Chris Salonikas, Brian Trudinger and George A.C. Murrell and has published in prestigious journals such as Nature Medicine, FEBS Letters and Arteriosclerosis Thrombosis and Vascular Biology.

In The Last Decade

Ah Siew Sim

17 papers receiving 1.7k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Ah Siew Sim Australia	16	715	673	310	294	276	17	1.7k
Markus Stühlinger Austria	16	913 1.3×	1.1k 1.7×	236 0.8×	345 1.2×	274 1.0×	43	2.2k
Kyriakoula Marinou Greece	24	530 0.7×	645 1.0×	319 1.0×	95 0.3×	274 1.0×	48	1.8k
Robert Wever Netherlands	11	1.0k 1.4×	685 1.0×	283 0.9×	379 1.3×	193 0.7×	14	2.0k
C Ratnatunga United Kingdom	17	1.3k 1.8×	1.1k 1.7×	604 1.9×	264 0.9×	317 1.1×	38	3.2k
Chagriya Kitiyakara Thailand	23	489 0.7×	546 0.8×	542 1.7×	154 0.5×	347 1.3×	84	2.7k
Andrzej Surdacki Poland	21	572 0.8×	930 1.4×	308 1.0×	182 0.6×	111 0.4×	136	1.8k
Cheerag Shirodaria United Kingdom	20	686 1.0×	1.1k 1.6×	393 1.3×	282 1.0×	102 0.4×	55	2.2k
Federico Cacciapuoti Italy	23	362 0.5×	742 1.1×	434 1.4×	193 0.7×	511 1.9×	76	1.9k
David Hürlimann Switzerland	22	393 0.5×	1.8k 2.6×	486 1.6×	320 1.1×	351 1.3×	45	2.9k
Friedrich Schulze Germany	22	1.2k 1.7×	1.3k 1.9×	324 1.0×	114 0.4×	420 1.5×	39	2.9k

Countries citing papers authored by Ah Siew Sim

Since Specialization

Citations

This map shows the geographic impact of Ah Siew Sim's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ah Siew Sim with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ah Siew Sim more than expected).

Fields of papers citing papers by Ah Siew Sim

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ah Siew Sim. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ah Siew Sim. The network helps show where Ah Siew Sim may publish in the future.

Co-authorship network of co-authors of Ah Siew Sim

This figure shows the co-authorship network connecting the top 25 collaborators of Ah Siew Sim. A scholar is included among the top collaborators of Ah Siew Sim based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ah Siew Sim. Ah Siew Sim is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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17 of 17 papers shown

Liu, Jia, Jun Wang, Ah Siew Sim, et al.. (2012). Regulation of Nitric Oxide by Cigarette Smoke in Airway Cells. 2(1). 9–16. 2 indexed citations

Wilcken, D. E. L., Ah Siew Sim, Jun Wang, & Xing Li Wang. (2007). Asymmetric dimethylarginine (ADMA) in vascular, renal and hepatic disease and the regulatory role of l-arginine on its metabolism. Molecular Genetics and Metabolism. 91(4). 309–317. 70 indexed citations

Wang, Jun, Ah Siew Sim, Xing Li Wang, et al.. (2007). Relations between markers of renal function, coronary risk factors and the occurrence and severity of coronary artery disease. Atherosclerosis. 197(2). 853–859. 51 indexed citations

Sim, Ah Siew, et al.. (2006). L-arginine regulates asymmetric dimethylarginine metabolism by inhibiting dimethylarginine dimethylaminohydrolase activity in hepatic (HepG2) cells. Cellular and Molecular Life Sciences. 63(23). 2838–2846. 30 indexed citations

Wilcken, David E.L., et al.. (2006). Asymmetric dimethylarginine in homocystinuria due to cystathionine β‐synthase deficiency: Relevance of renal function. Journal of Inherited Metabolic Disease. 29(1). 30–37. 20 indexed citations

Wang, Jun, Ah Siew Sim, Xing Li Wang, et al.. (2005). Relations between plasma asymmetric dimethylarginine (ADMA) and risk factors for coronary disease. Atherosclerosis. 184(2). 383–388. 73 indexed citations

Sim, Ah Siew, Chris Salonikas, Daya Naidoo, & D. E. L. Wilcken. (2003). Improved method for plasma malondialdehyde measurement by high-performance liquid chromatography using methyl malondialdehyde as an internal standard. Journal of Chromatography B. 785(2). 337–344. 117 indexed citations

Wang, X. L., Marta Greco, Ah Siew Sim, et al.. (2002). Glutathione S-Transferase Mu1 Deficiency, Cigarette Smoking and Coronary Artery Disease. European Journal of Cardiovascular Prevention & Rehabilitation. 9(1). 25–31. 35 indexed citations

Wang, Xing Li, et al.. (2002). Effect of CYP1A1 MspI polymorphism on cigarette smoking related coronary artery disease and diabetes. Atherosclerosis. 162(2). 391–397. 67 indexed citations

10.

Wang, Xing, et al.. (2002). . Journal of Cardiovascular Risk. 9(1). 25–31. 18 indexed citations

11.

Wang, Xing Li, et al.. (2000). Genotype dependent and cigarette specific effects on endothelial nitric oxide synthase gene expression and enzyme activity. FEBS Letters. 471(1). 45–50. 198 indexed citations

12.

Wang, Xing Li, et al.. (1999). Relationship between total plasma homocysteine, polymorphisms of homocysteine metabolism related enzymes, risk factors and coronary artery disease in the Australian hospital-based population. Atherosclerosis. 146(1). 133–140. 79 indexed citations

13.

Wang, X. L., et al.. (1998). The effect on transcription efficiency of the apolipoprotein AI gene of DNA variants at the 5′ untranslated region. International Journal of Clinical & Laboratory Research. 28(4). 235–241. 16 indexed citations

14.

Wang, X. L., Takahiro Adachi, Ah Siew Sim, & D. E. L. Wilcken. (1998). Plasma Extracellular Superoxide Dismutase Levels in an Australian Population With Coronary Artery Disease. Arteriosclerosis Thrombosis and Vascular Biology. 18(12). 1915–1921. 79 indexed citations

15.

Wang, Xing L., Michael C. Mahaney, Ah Siew Sim, et al.. (1997). Genetic Contribution of the Endothelial Constitutive Nitric Oxide Synthase Gene to Plasma Nitric Oxide Levels. Arteriosclerosis Thrombosis and Vascular Biology. 17(11). 3147–3153. 256 indexed citations

16.

Wang, Xing L., Ah Siew Sim, Renee F. Badenhop, R. M. McCredie, & David E.L. Wilcken. (1996). A smoking–dependent risk of coronary artery disease associated with a polymorphism of the endothelial nitric oxide synthase gene. Nature Medicine. 2(1). 41–45. 471 indexed citations

17.

Wilcken, D. E. L., Xing L. Wang, Ah Siew Sim, & R. M. McCredie. (1996). Distribution in Healthy and Coronary Populations of the Methylenetetrahydrofolate Reductase (MTHFR) C ₆₇₇ T Mutation. Arteriosclerosis Thrombosis and Vascular Biology. 16(7). 878–882. 147 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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