Nisha K. Ramakrishnan

739 total citations
29 papers, 599 citations indexed

About

Nisha K. Ramakrishnan is a scholar working on Molecular Biology, Cellular and Molecular Neuroscience and Radiology, Nuclear Medicine and Imaging. According to data from OpenAlex, Nisha K. Ramakrishnan has authored 29 papers receiving a total of 599 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Molecular Biology, 11 papers in Cellular and Molecular Neuroscience and 5 papers in Radiology, Nuclear Medicine and Imaging. Recurrent topics in Nisha K. Ramakrishnan's work include Pharmacological Receptor Mechanisms and Effects (12 papers), Receptor Mechanisms and Signaling (11 papers) and Neuroscience and Neuropharmacology Research (9 papers). Nisha K. Ramakrishnan is often cited by papers focused on Pharmacological Receptor Mechanisms and Effects (12 papers), Receptor Mechanisms and Signaling (11 papers) and Neuroscience and Neuropharmacology Research (9 papers). Nisha K. Ramakrishnan collaborates with scholars based in Netherlands, Japan and United Kingdom. Nisha K. Ramakrishnan's co-authors include Aren van Waarde, Philip H. Elsinga, Rudi Dierckx, Kiichi Ishiwata, Anna A. Rybczynska, Jürgen W. A. Sijbesma, Paul G.M. Luiten, Rudi Dierckx, Ingrid M. Nijholt and Csaba Nyakas and has published in prestigious journals such as Journal of Medicinal Chemistry, Biochimica et Biophysica Acta (BBA) - Biomembranes and Journal of Cerebral Blood Flow & Metabolism.

In The Last Decade

Nisha K. Ramakrishnan

27 papers receiving 594 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Nisha K. Ramakrishnan Netherlands	12	401	190	84	80	65	29	599
Chi-Chang Weng United States	14	316 0.8×	135 0.7×	138 1.6×	118 1.5×	44 0.7×	26	722
Anna A. Rybczynska Netherlands	12	402 1.0×	136 0.7×	93 1.1×	48 0.6×	74 1.1×	20	566
Michelle L. Ganno United States	16	455 1.1×	319 1.7×	77 0.9×	41 0.5×	66 1.0×	28	736
Chunyang Jin United States	14	310 0.8×	173 0.9×	67 0.8×	37 0.5×	170 2.6×	47	579
Sandra Sanabria United States	12	196 0.5×	151 0.8×	75 0.9×	114 1.4×	22 0.3×	30	456
Sac-Pham Tang United Kingdom	6	132 0.3×	80 0.4×	122 1.5×	53 0.7×	31 0.5×	9	364
Andrew D. Gribble United Kingdom	14	362 0.9×	177 0.9×	131 1.6×	39 0.5×	88 1.4×	20	674
Robert Zimmer France	11	155 0.4×	103 0.5×	29 0.3×	100 1.3×	50 0.8×	21	546
Franck Sobrio France	15	264 0.7×	233 1.2×	52 0.6×	204 2.5×	93 1.4×	35	708
Yesim A. Tahirovic United States	13	209 0.5×	158 0.8×	77 0.9×	27 0.3×	56 0.9×	20	375

Countries citing papers authored by Nisha K. Ramakrishnan

Since Specialization

Citations

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

Fields of papers citing papers by Nisha K. Ramakrishnan

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Nisha K. Ramakrishnan. 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 Nisha K. Ramakrishnan. The network helps show where Nisha K. Ramakrishnan may publish in the future.

Co-authorship network of co-authors of Nisha K. Ramakrishnan

This figure shows the co-authorship network connecting the top 25 collaborators of Nisha K. Ramakrishnan. A scholar is included among the top collaborators of Nisha K. Ramakrishnan 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 Nisha K. Ramakrishnan. Nisha K. Ramakrishnan 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

Ramakrishnan, Nisha K., Stephen Thompson, Selena Milicevic Sephton, et al.. (2025). PET Imaging of a Transgenic Tau Rat Model SHR24 with [18F]AV1451. Molecular Imaging and Biology. 27(2). 238–249.

Ramakrishnan, Nisha K., Helen Betts, Selena Milicevic Sephton, et al.. (2022). Automated radiosynthesis and preclinical in vivo evaluation of [18F]Fluoroethylpuromycin as a potential radiotracer for imaging protein synthesis with PET. Nuclear Medicine and Biology. 114-115. 71–77. 1 indexed citations

McMurray, Lindsay, Jennifer A. Macdonald, Nisha K. Ramakrishnan, et al.. (2021). Synthesis and Assessment of Novel Probes for Imaging Tau Pathology in Transgenic Mouse and Rat Models. ACS Chemical Neuroscience. 12(11). 1885–1893. 10 indexed citations

Ramakrishnan, Nisha K., Stephen Thompson, David J. Williamson, et al.. (2021). Preclinical evaluation of (S)-[18F]GE387, a novel 18-kDa translocator protein (TSPO) PET radioligand with low binding sensitivity to human polymorphism rs6971. European Journal of Nuclear Medicine and Molecular Imaging. 49(1). 125–136. 16 indexed citations

Ramakrishnan, Nisha K., et al.. (2019). Sleep patterns and distractors in college students. Sleep Medicine. 64. S311–S312. 1 indexed citations

McMurray, Lindsay, Selena Milicevic Sephton, Nisha K. Ramakrishnan, et al.. (2019). Radiosynthesis of (R,S)‐[¹⁸F]GE387: A Potential PET Radiotracer for Imaging Translocator Protein 18 kDa (TSPO) with Low Binding Sensitivity to the Human Gene Polymorphism rs6971. ChemMedChem. 14(9). 982–993. 27 indexed citations

Preetha, S., et al.. (2017). Analysis Of the Mechanism Of Action By Molecular Docking Studies Of One Ethno Veterinary Herbal Preparation Used In Bovine Mastitis.

Jauregui‐Osoro, Maite, Karen Shaw, Júlia Baguña Torres, et al.. (2016). [18F]tetrafluoroborate as a PET tracer for the sodium/iodide symporter: the importance of specific activity. EJNMMI Research. 6(1). 34–34. 34 indexed citations

Sahlholm, Kristoffer, Jürgen W. A. Sijbesma, Bram Maas, et al.. (2015). Pridopidine selectively occupies sigma-1 rather than dopamine D2 receptors at behaviorally active doses. Psychopharmacology. 232(18). 3443–3453. 47 indexed citations

10.

Ramakrishnan, Nisha K., Anna A. Rybczynska, Csaba Nyakas, et al.. (2015). Sigma-1 Agonist Binding in the Aging Rat Brain: a MicroPET Study with [11C]SA4503. Molecular Imaging and Biology. 18(4). 588–597. 13 indexed citations

11.

Ramakrishnan, Nisha K., Gert Luurtsema, Csaba Nyakas, et al.. (2014). Cutamesine Overcomes REM Sleep Deprivation-Induced Memory Loss: Relationship to Sigma-1 Receptor Occupancy. Molecular Imaging and Biology. 17(3). 364–372. 8 indexed citations

12.

Waarde, Aren van, Anna A. Rybczynska, Nisha K. Ramakrishnan, et al.. (2014). Potential applications for sigma receptor ligands in cancer diagnosis and therapy. Biochimica et Biophysica Acta (BBA) - Biomembranes. 1848(10). 2703–2714. 132 indexed citations

13.

Ramakrishnan, Nisha K., Krisztina Marosi, Csaba Nyakas, et al.. (2014). Altered Sigma-1 Receptor Expression in Two Animal Models of Cognitive Impairment. European Journal of Nuclear Medicine and Molecular Imaging. 41. 1 indexed citations

14.

Ramakrishnan, Nisha K., Krisztina Marosi, Csaba Nyakas, et al.. (2014). Altered Sigma-1 Receptor Expression in Two Animal Models of Cognitive Impairment. Molecular Imaging and Biology. 17(2). 231–238. 5 indexed citations

15.

Ramakrishnan, Nisha K., Anna A. Rybczynska, Krisztina Marosi, et al.. (2013). Small-Animal PET with a σ-Ligand, ¹¹C-SA4503, Detects Spontaneous Pituitary Tumors in Aged Rats. Journal of Nuclear Medicine. 54(8). 1377–1383. 15 indexed citations

16.

Ramakrishnan, Nisha K., Antoon T. M. Willemsen, Valentina Di Gialleonardo, et al.. (2013). [¹¹C]5-HTP and microPET are Not Suitable for Pharmacodynamic Studies in the Rodent Brain. Journal of Cerebral Blood Flow & Metabolism. 34(1). 118–125. 8 indexed citations

17.

Vries, Erik F. J. de, Nisha K. Ramakrishnan, Antoon T. M. Willemsen, et al.. (2013). Analysis of 5-HT2A Receptor Binding with [11C]MDL 100907 in Rats: Optimization of Kinetic Modeling. Molecular Imaging and Biology. 15(6). 730–738. 6 indexed citations

18.

Ramakrishnan, Nisha K., Anna A. Rybczynska, Csaba Nyakas, et al.. (2011). MicroPET scans of rodents with spontaneous pituitary tumors, using the sigma ligand C-11-SA4503. Data Archiving and Networked Services (DANS). 1 indexed citations

19.

Waarde, Aren van, Nisha K. Ramakrishnan, Anna A. Rybczynska, et al.. (2010). The cholinergic system, sigma-1 receptors and cognition. Behavioural Brain Research. 221(2). 543–554. 65 indexed citations

20.

Waarde, Aren van, Nisha K. Ramakrishnan, Anna A. Rybczynska, et al.. (2009). Synthesis and Preclinical Evaluation of Novel PET Probes for P-Glycoprotein Function and Expression. Journal of Medicinal Chemistry. 52(14). 4524–4532. 45 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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