Masami Niwa

6.7k total citations · 2 hit papers
147 papers, 5.5k citations indexed

About

Masami Niwa is a scholar working on Molecular Biology, Neurology and Cellular and Molecular Neuroscience. According to data from OpenAlex, Masami Niwa has authored 147 papers receiving a total of 5.5k indexed citations (citations by other indexed papers that have themselves been cited), including 53 papers in Molecular Biology, 46 papers in Neurology and 44 papers in Cellular and Molecular Neuroscience. Recurrent topics in Masami Niwa's work include Barrier Structure and Function Studies (31 papers), Receptor Mechanisms and Signaling (23 papers) and Neuroscience and Neuropharmacology Research (22 papers). Masami Niwa is often cited by papers focused on Barrier Structure and Function Studies (31 papers), Receptor Mechanisms and Signaling (23 papers) and Neuroscience and Neuropharmacology Research (22 papers). Masami Niwa collaborates with scholars based in Japan, Hungary and United States. Masami Niwa's co-authors include Mária A. Deli, Shinsuke Nakagawa, Yasufumi Kataoka, Csongor S. Ábrahám, Kunihiko Tanaka, Ágnes Kittel, Kentaro Hayashi, Yuji Nagayama, Takeshi Shimizudani and Hiroko Kawaguchi and has published in prestigious journals such as Journal of Biological Chemistry, The Journal of Clinical Endocrinology & Metabolism and Journal of Virology.

In The Last Decade

Masami Niwa

146 papers receiving 5.3k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

A new blood–brain barrier model using primary rat brain endothelial cells, pericytes and astrocytes

2008 573 citations Shinsuke Nakagawa, Mária A. Deli et al. profile →
Permeability Studies on In Vitro Blood–Brain Barrier Models: Physiology, Pathology, and Pharmacology

2005 510 citations Mária A. Deli, Yasufumi Kataoka et al. Cellular and Molecular Neurobiology profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Masami Niwa Japan	37	2.0k	1.8k	960	946	760	147	5.5k
Yasufumi Kataoka Japan	38	2.5k 1.2×	2.2k 1.2×	1.2k 1.2×	795 0.8×	897 1.2×	208	6.3k
Leonard P. Rybak United States	54	2.1k 1.0×	2.3k 1.3×	482 0.5×	1.2k 1.3×	568 0.7×	199	9.9k
Björn Bauer United States	36	1.3k 0.7×	1.6k 0.9×	697 0.7×	2.6k 2.7×	1.1k 1.5×	49	6.2k
István A. Krizbai Hungary	37	1.7k 0.8×	1.6k 0.9×	534 0.6×	737 0.8×	514 0.7×	110	4.4k
Lars Rönnbäck Sweden	36	2.8k 1.4×	2.7k 1.5×	2.1k 2.2×	593 0.6×	1.0k 1.3×	130	7.8k
Amy R. Nelson United States	19	3.1k 1.5×	2.5k 1.4×	847 0.9×	1.1k 1.2×	1.9k 2.5×	33	8.1k
Nicola Marchi France	47	1.7k 0.9×	1.8k 1.0×	1.7k 1.8×	1.1k 1.1×	656 0.9×	128	6.7k
Yuri Persidsky United States	56	3.9k 2.0×	2.4k 1.3×	968 1.0×	896 0.9×	1.1k 1.5×	133	9.7k
Servio H. Ramirez United States	39	1.9k 1.0×	2.0k 1.1×	695 0.7×	442 0.5×	555 0.7×	80	5.6k
Ulrich Bogdahn Germany	46	971 0.5×	2.3k 1.3×	1.4k 1.5×	1.3k 1.4×	557 0.7×	163	7.8k

Countries citing papers authored by Masami Niwa

Since Specialization

Citations

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

Fields of papers citing papers by Masami Niwa

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Masami Niwa

This figure shows the co-authorship network connecting the top 25 collaborators of Masami Niwa. A scholar is included among the top collaborators of Masami Niwa 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 Masami Niwa. Masami Niwa 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

Sato, Kei, Shinsuke Nakagawa, Yoichi Morofuji, et al.. (2022). Effects of fasudil on blood–brain barrier integrity. Fluids and Barriers of the CNS. 19(1). 43–43. 19 indexed citations

Watanabe, Daisuke, Shinsuke Nakagawa, Yoichi Morofuji, et al.. (2021). Characterization of a Primate Blood-Brain Barrier Co-Culture Model Prepared from Primary Brain Endothelial Cells, Pericytes and Astrocytes. Pharmaceutics. 13(9). 1484–1484. 14 indexed citations

Nakagawa, Shinsuke, et al.. (2020). Defective Function of the Blood–Brain Barrier in a Stroke-Prone Spontaneously Hypertensive Rat: Evaluation in an In Vitro Cell Culture Model. Cellular and Molecular Neurobiology. 42(1). 243–253. 4 indexed citations

Nagayama, Yuji, et al.. (1998). Retrovirus-Mediated Suicide Gene Prodrug Therapy Targeting Thyroid Carcinoma Using a Thyroid-Specific Promoter. Endocrinology. 139(9). 3996–3999. 40 indexed citations

Tanaka, Kunihiko, Yuji Nagayama, Eijun Nishihara, et al.. (1998). Palmitoylation of Human Thyrotropin Receptor: Slower Intracellular Trafficking of the Palmitoylation-Defective Mutant. Endocrinology. 139(2). 803–806. 49 indexed citations

Nagayama, Yuji, Kozo Akino, Masako Yasuda, et al.. (1998). Therapeutic Usefulness of Wild-Typep53Gene Introduction in ap53-Null Anaplastic Thyroid Carcinoma Cell Line. The Journal of Clinical Endocrinology & Metabolism. 83(10). 3668–3672. 36 indexed citations

Sakurai‐Yamashita, Yasuko, Masami Niwa, Kimihiro Yamashita, et al.. (1997). Endothelin receptors in kainic acid-induced neural lesions of rat brain. Neuroscience. 81(2). 565–577. 17 indexed citations

Sakurai‐Yamashita, Yasuko, Kimihiro Yamashita, Yasufumi Kataoka, et al.. (1997). Expression of endothelin receptors and nitric oxide synthase in the brain of stroke-prone spontaneously hypertensive rats with cerebral apoplexy. Brain Research. 756(1-2). 61–67. 7 indexed citations

Nagayama, Yuji, Kunihiko Tanaka, Takeshi Hara, et al.. (1996). Involvement of G Protein-coupled Receptor Kinase 5 in Homologous Desensitization of the Thyrotropin Receptor. Journal of Biological Chemistry. 271(17). 10143–10148. 57 indexed citations

10.

Makiyama, Kazuya, et al.. (1995). Differential mechanism of peptide YY and neuropeptide Y in inhibiting motility of guinea-pig colon. European Journal of Pharmacology. 276(3). 223–230. 21 indexed citations

11.

Tsutsumi, Keisuke, Masami Niwa, Naoki Kitagawa, et al.. (1994). Enhanced Expression of an Endothelin ET_A Receptor in Capillaries from Human Glioblastoma: A Quantitative Receptor Autoradiographic Analysis Using a Radioluminographic Imaging Plate System. Journal of Neurochemistry. 63(6). 2240–2247. 11 indexed citations

12.

Taniyama, Kohtaro, et al.. (1993). Inhibition of the Vesicular Release of Neurotransmitters by Stimulation of GABA_B Receptor. Annals of the New York Academy of Sciences. 707(1). 496–499. 1 indexed citations

13.

Niwa, Masami, et al.. (1992). Nebracetam (WEB 1881FU) Prevents N-Methyl-D-Aspartate Receptor-Mediated Neurotoxicity in Rat Striatal Slices. The Japanese Journal of Pharmacology. 59(2). 247–250. 4 indexed citations

14.

Yamashiro, Katsumi, Masaki Kurihara, K Mori, et al.. (1991). Neurones with Epileptiform Discharge in the Central Nervous System and Chronic Pain. Acta neurochirurgica. Supplementum. 52. 130–132. 8 indexed citations

15.

Kurihara, Masaki, Akira Ochi, Tsutomu Kawaguchi, et al.. (1990). Localization and Characterization of Endothelin Receptors in Human Gliomas: A Growth Factor?. Neurosurgery. 27(2). 275–281. 16 indexed citations

16.

Kurihara, Masaki, Yoshiharu Tokunaga, Akira Ochi, et al.. (1989). [Expression of insulin-like growth factor I receptors in human brain tumors: comparison with epidermal growth factor receptor by using quantitative autoradiography].. PubMed. 41(7). 719–25. 11 indexed citations

17.

Tsutsumi, Keisuke, et al.. (1987). Atrial natriuretic polypeptides elevate the level of cyclic GMP in the rat choroid plexus. Neuroscience Letters. 79(1-2). 174–178. 24 indexed citations

18.

Kataoka, Yasufumi, et al.. (1987). The involvement of neuropeptide Y in the antimuricide action of noradrenaline injected into the medial amygdala of olfactory bulbectomized rats. Pharmacology Biochemistry and Behavior. 28(1). 101–103. 16 indexed citations

19.

Sakabe, Takefumi, et al.. (1986). Effect of S-Adenosyl-L-methionine on cerebral monoamine turnover after hypoxia in rats.. Folia Pharmacologica Japonica. 88(6). 425–431. 9 indexed citations

20.

Niwa, Masami, et al.. (1982). . Folia Pharmacologica Japonica. 79(2). 77–84. 3 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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