Ho Sam Ahn

941 total citations
31 papers, 715 citations indexed

About

Ho Sam Ahn is a scholar working on Molecular Biology, Cellular and Molecular Neuroscience and Clinical Psychology. According to data from OpenAlex, Ho Sam Ahn has authored 31 papers receiving a total of 715 indexed citations (citations by other indexed papers that have themselves been cited), including 20 papers in Molecular Biology, 10 papers in Cellular and Molecular Neuroscience and 5 papers in Clinical Psychology. Recurrent topics in Ho Sam Ahn's work include Receptor Mechanisms and Signaling (8 papers), Neurotransmitter Receptor Influence on Behavior (7 papers) and Phosphodiesterase function and regulation (5 papers). Ho Sam Ahn is often cited by papers focused on Receptor Mechanisms and Signaling (8 papers), Neurotransmitter Receptor Influence on Behavior (7 papers) and Phosphodiesterase function and regulation (5 papers). Ho Sam Ahn collaborates with scholars based in United States, South Korea and Canada. Ho Sam Ahn's co-authors include Maynard H. Makman, Edmund J. Sybertz, Barry J.R. Pitts, Robert Walker, L Mandel, W.J.A. Vandenheuvel, B. Dvorkin, L. J. Thal, Michael A. Romano and Sara G. Horowitz and has published in prestigious journals such as The Lancet, Biochemistry and Analytical Biochemistry.

In The Last Decade

Ho Sam Ahn

30 papers receiving 645 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Ho Sam Ahn United States	16	348	236	122	120	77	31	715
Kern von Hungen United States	14	374 1.1×	391 1.7×	103 0.8×	34 0.3×	68 0.9×	20	772
Herbert C. Wenger United States	10	263 0.8×	225 1.0×	130 1.1×	132 1.1×	15 0.2×	18	659
P A Janssen Belgium	16	694 2.0×	688 2.9×	308 2.5×	200 1.7×	77 1.0×	28	1.4k
Didier de Chaffoy de Courcelles Belgium	15	520 1.5×	341 1.4×	117 1.0×	161 1.3×	60 0.8×	32	1.2k
Carl T. Ludden United States	12	306 0.9×	212 0.9×	144 1.2×	205 1.7×	15 0.2×	25	766
Brian L. Largent United States	15	638 1.8×	541 2.3×	112 0.9×	61 0.5×	47 0.6×	18	1.3k
Ludo Kennis Belgium	7	537 1.5×	555 2.4×	169 1.4×	63 0.5×	38 0.5×	12	1.1k
Chung-Ren Jan Taiwan	15	404 1.2×	268 1.1×	76 0.6×	72 0.6×	60 0.8×	29	665
R Hahn United States	18	426 1.2×	377 1.6×	198 1.6×	170 1.4×	8 0.1×	44	963
Jean Schwartz France	21	605 1.7×	544 2.3×	192 1.6×	169 1.4×	16 0.2×	48	1.3k

Countries citing papers authored by Ho Sam Ahn

Since Specialization

Citations

This map shows the geographic impact of Ho Sam Ahn'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 Ho Sam Ahn with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ho Sam Ahn more than expected).

Fields of papers citing papers by Ho Sam Ahn

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ho Sam Ahn. 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 Ho Sam Ahn. The network helps show where Ho Sam Ahn may publish in the future.

Co-authorship network of co-authors of Ho Sam Ahn

This figure shows the co-authorship network connecting the top 25 collaborators of Ho Sam Ahn. A scholar is included among the top collaborators of Ho Sam Ahn 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 Ho Sam Ahn. Ho Sam Ahn is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Kim, Younghoon, et al.. (2025). Identification of Thieno[3,2-d]pyrimidine derivatives as potent and selective Janus Kinase 1 inhibitors. European Journal of Medicinal Chemistry. 286. 117308–117308.

Ahn, Ho Sam, Ji Sun Hong, & Doug Hyun Han. (2025). Psychological Interventions for Complex Post-traumatic Stress Disorder Symptoms: A Systematic Review. Journal of Korean Medical Science. 40(43). e279–e279. 1 indexed citations

Barnett, A, Louis C. Iorio, William Kreutner, et al.. (1994). Evaluation of the CNS properties of SCH 29851, a potential non-sedating antihistamine. Inflammation Research. 43(3-4). 149–157. 2 indexed citations

Tulshian, Deen, Michael Czarniecki, Ronald J. Doll, & Ho Sam Ahn. (1993). Synthesis and phosphodiesterase activity of carboxylic acid mimetics of cyclic guanosine 3',5'-monophosphate. Journal of Medicinal Chemistry. 36(9). 1210–1220. 6 indexed citations

Ahn, Ho Sam, Michael A. Foster, Carolyn Foster, Edmund J. Sybertz, & Jack N. Wells. (1991). Evidence for essential histidine and cysteine residues in calcium/calmodulin-sensitive cyclic nucleotide phosphodiesterase. Biochemistry. 30(27). 6754–6760. 6 indexed citations

Ahn, Ho Sam, Michael A. Foster, Michael Cable, Barry J.R. Pitts, & Edmund J. Sybertz. (1991). Ca/CaM-Stimulated and cGMP-Specific Phosphodiesterases in Vascular and Non-Vascular Tissues. Advances in experimental medicine and biology. 308. 191–197. 75 indexed citations

Ahn, Ho Sam, et al.. (1989). Effects of selective inhibitors on cyclic nucleotide phosphodiesterases of rabbit aorta. Biochemical Pharmacology. 38(19). 3331–3339. 99 indexed citations

Sybertz, Edmund J., Robert W. Watkins, Ho Sam Ahn, et al.. (1987). Pharmacologic, Metabolic, and Toxicologic Profile of Spirapril (SCH 33844), a New Angiotensin Converting Inhibitor. Journal of Cardiovascular Pharmacology. 10. 105–108. 15 indexed citations

Baum, Thomas, Edmund J. Sybertz, Robert W. Watkins, et al.. (1983). Antihypertensive Activity of SCH 31846, a Non-Sulfhydryl Angiotensin-Converting Enzyme Inhibitor. Journal of Cardiovascular Pharmacology. 5(4). 655–667. 16 indexed citations

10.

Ahn, Ho Sam, Eliot L. Gardner, & Maynard H. Makman. (1979). Anterior pituitary adenylate cyclase: Stimulation by dopamine and other monoamines. European Journal of Pharmacology. 53(3). 313–317. 28 indexed citations

11.

Ahn, Ho Sam, Susan C. Feldman, & Maynard H. Makman. (1979). Posterior pituitary adenylate cyclase: stimulation by dopamine and other agents. Brain Research. 166(2). 422–425. 12 indexed citations

12.

Makman, Maynard H., Ho Sam Ahn, L. J. Thal, et al.. (1978). Biogenic Amine-Stimulated Adenylate Cyclase and Spiroperidol-Binding Sites in Rabbit Brain: Evidence for Selective Loss of Receptors with Aging. Advances in experimental medicine and biology. 113. 211–230. 12 indexed citations

13.

Ahn, Ho Sam, Sara G. Horowitz, Harry Eagle, & Maynard H. Makman. (1978). Effects of cell density and cell growth alterations on cyclic nucleotide levels in cultured human diploid fibroblasts. Experimental Cell Research. 114(1). 101–110. 10 indexed citations

14.

Ahn, Ho Sam & Maynard H. Makman. (1978). Stimulation of adenylate cyclase activity in monkey anterior limbic cortex by serotonin. Brain Research. 153(3). 636–640. 9 indexed citations

15.

Ahn, Ho Sam & Maynard H. Makman. (1977). Neurotransmitter-sensitive adenylate cyclase in the hypothalami of guinea-pig, rat and monkey. Brain Research. 138(1). 125–138. 27 indexed citations

16.

Ahn, Ho Sam, et al.. (1976). Catecholamine-sensitive adenylate cyclase in frontal cortex of primate brain. Brain Research. 116(3). 437–454. 26 indexed citations

17.

Bidder, T. George, L Mandel, Ho Sam Ahn, W.J.A. Vandenheuvel, & Robert Walker. (1974). BLOOD AND URINARY DIMETHYLTRYPTAMINE IN ACUTE PSYCHOTIC DISORDERS. The Lancet. 303(7849). 165–165. 18 indexed citations

18.

Wyatt, Richard Jed, L Mandel, Ho Sam Ahn, Robert Walker, & W. J. A. Vanden Heuvel. (1973). Gas chromatographic-mass spectrometric isotope dilution determination of N,N-dimethyltryptamine concentrations in normals and psychiatric patients. Psychopharmacology. 31(3). 265–270. 33 indexed citations

19.

Walker, Robert, Ho Sam Ahn, L Mandel, & W.J.A. Vandenheuvel. (1972). Identification of N,N-dimethyltryptamine as the product of an in vitro enzymic methylation. Analytical Biochemistry. 47(1). 228–234. 22 indexed citations

20.

Ahn, Ho Sam & Helen R. Strausser. (1971). Isolation of viable rat kidney tubules. Life Sciences. 10(4). 223–232. 2 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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