S Koumi

686 total citations
18 papers, 549 citations indexed

About

S Koumi is a scholar working on Molecular Biology, Cardiology and Cardiovascular Medicine and Cellular and Molecular Neuroscience. According to data from OpenAlex, S Koumi has authored 18 papers receiving a total of 549 indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Molecular Biology, 17 papers in Cardiology and Cardiovascular Medicine and 12 papers in Cellular and Molecular Neuroscience. Recurrent topics in S Koumi's work include Ion channel regulation and function (17 papers), Cardiac electrophysiology and arrhythmias (16 papers) and Neuroscience and Neuropharmacology Research (7 papers). S Koumi is often cited by papers focused on Ion channel regulation and function (17 papers), Cardiac electrophysiology and arrhythmias (16 papers) and Neuroscience and Neuropharmacology Research (7 papers). S Koumi collaborates with scholars based in Japan, United States and Philippines. S Koumi's co-authors include Ryoichi Sato, C E Arentzen, C.L. Backer, J. Andrew Wasserstrom, Robert E. Ten Eick, Takumi Aramaki, H Hayakawa, Ichiro Hisatome, Ruth L. Martin and Kazuya Nagasawa and has published in prestigious journals such as Circulation, Journal of Clinical Investigation and The Journal of Physiology.

In The Last Decade

S Koumi

18 papers receiving 539 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
S Koumi Japan	14	474	417	163	45	24	18	549
W Giles Canada	10	474 1.0×	413 1.0×	253 1.6×	27 0.6×	22 0.9×	14	555
Judith M.B. Pinto United States	12	415 0.9×	295 0.7×	116 0.7×	29 0.6×	10 0.4×	25	525
S. H. Marieke de Groot Netherlands	7	639 1.3×	445 1.1×	82 0.5×	20 0.4×	24 1.0×	8	664
Roel L. H. M. G. Spätjens Netherlands	12	864 1.8×	682 1.6×	147 0.9×	32 0.7×	43 1.8×	18	908
Jiří Šimurda Czechia	14	415 0.9×	343 0.8×	195 1.2×	26 0.6×	24 1.0×	50	480
Lasse Skibsbye Denmark	14	590 1.2×	388 0.9×	90 0.6×	37 0.8×	11 0.5×	21	692
Miklós Bitay Hungary	9	476 1.0×	415 1.0×	138 0.8×	20 0.4×	33 1.4×	13	540
Michal Pásek Czechia	13	412 0.9×	358 0.9×	169 1.0×	18 0.4×	24 1.0×	42	483
Xiaojuan Xu Japan	10	580 1.2×	544 1.3×	98 0.6×	33 0.7×	16 0.7×	15	674
Károly Acsai Hungary	17	629 1.3×	601 1.4×	210 1.3×	49 1.1×	47 2.0×	34	758

Countries citing papers authored by S Koumi

Since Specialization

Citations

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

Fields of papers citing papers by S Koumi

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by S Koumi. 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 S Koumi. The network helps show where S Koumi may publish in the future.

Co-authorship network of co-authors of S Koumi

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

All Works

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18 of 18 papers shown

Koumi, S, Ryoichi Sato, Kazuya Nagasawa, & H Hayakawa. (1997). Activation of inwardly rectifying potassium channels by muscarinic receptor-linked G protein in isolated human ventricular myocytes. The Journal of Membrane Biology. 157(1). 71–81. 29 indexed citations

Koumi, S, Ruth L. Martin, & Ryoichi Sato. (1997). Alterations in ATP-sensitive potassium channel sensitivity to ATP in failing human hearts. American Journal of Physiology-Heart and Circulatory Physiology. 272(4). H1656–H1665. 30 indexed citations

Koumi, S, Ryoichi Sato, & H Hayakawa. (1995). Characterization of the acetylcholine-sensitive muscarinic K+ channel in isolated feline atrial and ventricular myocytes. The Journal of Membrane Biology. 145(2). 143–50. 12 indexed citations

Koumi, S, C.L. Backer, C E Arentzen, & Ryoichi Sato. (1995). beta-Adrenergic modulation of the inwardly rectifying potassium channel in isolated human ventricular myocytes. Alteration in channel response to beta-adrenergic stimulation in failing human hearts.. Journal of Clinical Investigation. 96(6). 2870–2881. 68 indexed citations

Martinꝉ, Roland, et al.. (1995). Comparison of the effects of internal [Mg2+] on IK1 in cat and guinea-pig cardiac ventricular myocytes. Journal of Molecular and Cellular Cardiology. 27(1). 673–691. 18 indexed citations

Sato, Ryoichi, et al.. (1995). A new class III antiarrhythmic drug, MS-551, blocks the inward rectifier potassium channel in isolated guinea pig ventricular myocytes.. Journal of Pharmacology and Experimental Therapeutics. 274(1). 469–474. 31 indexed citations

Sato, Ryoichi & S Koumi. (1995). Modulation of the inwardly rectifying K+ channel in isolated human atrial myocytes by ?1-adrenergic stimulation. The Journal of Membrane Biology. 148(2). 185–91. 26 indexed citations

Koumi, S, et al.. (1995). beta‐adrenergic and cholinergic modulation of the inwardly rectifying K+ current in guinea‐pig ventricular myocytes.. The Journal of Physiology. 486(3). 647–659. 25 indexed citations

Koumi, S, Ryoichi Sato, & Takumi Aramaki. (1995). Activation of the plasma membrane chloride channel by protein kinase C in isolated guinea‐pig hepatocytes.. The Journal of Physiology. 487(2). 379–394. 8 indexed citations

10.

Koumi, S, J. Andrew Wasserstrom, & Robert E. Ten Eick. (1995). Beta‐adrenergic and cholinergic modulation of inward rectifier K+ channel function and phosphorylation in guinea‐pig ventricle.. The Journal of Physiology. 486(3). 661–678. 49 indexed citations

11.

Koumi, S, Ryoichi Sato, Tsuyoshi Horikawa, Takumi Aramaki, & Hidemasa Okumura. (1994). Characterization of the calcium-sensitive voltage-gated delayed rectifier potassium channel in isolated guinea pig hepatocytes.. The Journal of General Physiology. 104(1). 147–171. 13 indexed citations

12.

Koumi, S, Ryoichi Sato, & Takumi Aramaki. (1994). Characterization of the calcium-activated chloride channel in isolated guinea-pig hepatocytes.. The Journal of General Physiology. 104(2). 357–373. 41 indexed citations

13.

Koumi, S, C E Arentzen, C.L. Backer, & J. Andrew Wasserstrom. (1994). Alterations in muscarinic K+ channel response to acetylcholine and to G protein-mediated activation in atrial myocytes isolated from failing human hearts.. Circulation. 90(5). 2213–2224. 75 indexed citations

14.

Koumi, S, et al.. (1994). Acetylcholine-sensitive muscarinic K+ channels in mammalian ventricular myocytes. American Journal of Physiology-Heart and Circulatory Physiology. 266(5). H1812–H1821. 54 indexed citations

15.

Sato, Ryoichi, et al.. (1994). Amiodarone blocks the inward rectifier potassium channel in isolated guinea pig ventricular cells.. Journal of Pharmacology and Experimental Therapeutics. 269(3). 1213–1219. 41 indexed citations

16.

Koumi, S, et al.. (1992). Sodium channel states control binding and unbinding behaviour of antiarrhythmic drugs in cardiac myocytes from the guinea pig. Cardiovascular Research. 26(12). 1199–1205. 12 indexed citations

17.

Koumi, S, et al.. (1992). Disopyramide block of cardiac sodium current after removal of the fast inactivation process in guinea pig ventricular myocytes.. Journal of Pharmacology and Experimental Therapeutics. 261(3). 1167–1174. 16 indexed citations

18.

Hata, Noritake, et al.. (1991). [Stress myocardial scintigraphy in coronary artery disease: its clinical significance].. PubMed. 21(1). 23–7. 1 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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