Masakazu Niimi

4.2k total citations · 1 hit paper
88 papers, 3.4k citations indexed

About

Masakazu Niimi is a scholar working on Infectious Diseases, Epidemiology and Molecular Biology. According to data from OpenAlex, Masakazu Niimi has authored 88 papers receiving a total of 3.4k indexed citations (citations by other indexed papers that have themselves been cited), including 65 papers in Infectious Diseases, 41 papers in Epidemiology and 27 papers in Molecular Biology. Recurrent topics in Masakazu Niimi's work include Antifungal resistance and susceptibility (61 papers), Fungal Infections and Studies (25 papers) and Pneumocystis jirovecii pneumonia detection and treatment (19 papers). Masakazu Niimi is often cited by papers focused on Antifungal resistance and susceptibility (61 papers), Fungal Infections and Studies (25 papers) and Pneumocystis jirovecii pneumonia detection and treatment (19 papers). Masakazu Niimi collaborates with scholars based in Japan, New Zealand and United States. Masakazu Niimi's co-authors include Richard D. Cannon, Kyoko Niimi, Brian C. Monk, Ann R. Holmes, Erwin Lamping, Koichi Tanabe, Yoshimasa Uehara, André Goffeau, Mikhail V. Keniya and Takashi Umeyama and has published in prestigious journals such as Journal of Biological Chemistry, Applied and Environmental Microbiology and Clinical Microbiology Reviews.

In The Last Decade

Masakazu Niimi

87 papers receiving 3.3k 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.

Efflux-Mediated Antifungal Drug Resistance

2009 456 citations Richard D. Cannon, Erwin Lamping et al. Clinical Microbiology Reviews profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Masakazu Niimi Japan	31	2.3k	1.7k	1.1k	488	447	88	3.4k
Françoise Ischer Switzerland	22	3.5k 1.5×	2.6k 1.6×	1.1k 1.0×	457 0.9×	581 1.3×	25	4.5k
Klaus Schröppel Germany	29	1.9k 0.8×	1.4k 0.8×	1.3k 1.2×	287 0.6×	337 0.8×	53	3.0k
Katherine S. Barker United States	37	2.9k 1.3×	2.2k 1.3×	1.0k 0.9×	240 0.5×	534 1.2×	58	4.2k
Kyoko Niimi Japan	26	1.4k 0.6×	1.1k 0.6×	763 0.7×	387 0.8×	274 0.6×	77	2.7k
H. Vanden Bossche Belgium	39	2.0k 0.9×	1.6k 1.0×	1.1k 1.0×	368 0.8×	558 1.2×	65	4.2k
Hsiu‐Jung Lo Taiwan	30	3.0k 1.3×	2.2k 1.3×	1.1k 1.0×	252 0.5×	302 0.7×	81	3.8k
Erwin Lamping New Zealand	20	1.2k 0.5×	875 0.5×	745 0.7×	323 0.7×	282 0.6×	44	2.1k
Patrick Marichal Belgium	27	1.5k 0.6×	1.1k 0.7×	699 0.6×	211 0.4×	398 0.9×	38	2.6k
David Loebenberg United States	34	3.7k 1.6×	3.1k 1.9×	1.3k 1.1×	305 0.6×	456 1.0×	108	5.4k
Elias K. Manavathu United States	31	1.6k 0.7×	1.1k 0.7×	825 0.8×	106 0.2×	392 0.9×	89	3.2k

Countries citing papers authored by Masakazu Niimi

Since Specialization

Citations

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

Fields of papers citing papers by Masakazu Niimi

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Masakazu Niimi

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

Oura, Takahiro, Shun Iwatani, Kyoko Niimi, et al.. (2021). Candida albicans Bgl2p, Ecm33p, and Als1p proteins are involved in adhesion to saliva-coated hydroxyapatite. Journal of Oral Microbiology. 13(1). 1879497–1879497. 9 indexed citations

Niimi, Masakazu, et al.. (2021). Vph1 is associated with the copper homeostasis of <i>Cryptococcus neoformans</i> serotype D. The Journal of General and Applied Microbiology. 67(5). 195–206. 1 indexed citations

Lamping, Erwin, Jingyi Zhu, Masakazu Niimi, & Richard D. Cannon. (2017). Role of Ectopic Gene Conversion in the Evolution of a Candida krusei Pleiotropic Drug Resistance Transporter Family. Genetics. 205(4). 1619–1639. 10 indexed citations

Iwatani, Shun, Takahiro Oura, Nongnuch Vanittanakom, et al.. (2016). Identification and functional characterization ofPenicillium marneffeipleiotropic drug resistance transportersABC1andABC2. Medical Mycology. 54(5). 478–491. 9 indexed citations

Ueno, Keigo, Akiko Okawara, Satoshi Yamagoe, et al.. (2012). The mannan ofCandida albicanslacking β-1,2-linked oligomannosides increases the production of inflammatory cytokines by dendritic cells. Medical Mycology. 51(4). 385–395. 20 indexed citations

Tanabe, Koichi, Erwin Lamping, Minoru Nagi, et al.. (2011). Chimeras of Candida albicans Cdr1p and Cdr2p reveal features of pleiotropic drug resistance transporter structure and function. Molecular Microbiology. 82(2). 416–433. 18 indexed citations

Niimi, Masakazu. (2010). Characterization of the Multi-drug Efflux Systems of Pathogenic Fungi Using Functional Hyperexpression in Saccharomyces cerevisiae. Nippon Ishinkin Gakkai Zasshi. 51(2). 79–86. 3 indexed citations

Nagi, Minoru, Koichi Tanabe, Yukie Takano, et al.. (2009). Serum or bile affects the in vitro azole susceptibilities of Candida spp.. PubMed. 62(4). 306–8. 9 indexed citations

Cannon, Richard D., Erwin Lamping, Ann R. Holmes, et al.. (2009). Efflux-Mediated Antifungal Drug Resistance. Clinical Microbiology Reviews. 22(2). 291–321. 456 indexed citations breakdown →

10.

Tanabe, Koichi, Erwin Lamping, Kyoko Adachi, et al.. (2007). Inhibition of fungal ABC transporters by unnarmicin A and unnarmicin C, novel cyclic peptides from marine bacterium. Biochemical and Biophysical Research Communications. 364(4). 990–995. 59 indexed citations

11.

Niimi, Kyoko, Katsuyuki Maki, Fumiaki Ikeda, et al.. (2006). Overexpression ofCandida albicans CDR1,CDR2, orMDR1Does Not Produce Significant Changes in Echinocandin Susceptibility. Antimicrobial Agents and Chemotherapy. 50(4). 1148–1155. 105 indexed citations

12.

Niimi, Masakazu, Shun‐ichi Wada, Koichi Tanabe, et al.. (2005). Functional analysis of fungal drug efflux transporters by heterologous expression in Saccharomyces cerevisiae.. PubMed. 58(1). 1–7. 18 indexed citations

13.

Niimi, Masakazu, Koichi Tanabe, Shun‐ichi Wada, et al.. (2005). ABC Transporters of Pathogenic Fungi: Recent Advances in Functional Analyses. Nippon Ishinkin Gakkai Zasshi. 46(4). 249–260. 9 indexed citations

14.

Umeyama, Takashi, Aki Kaneko, Yuki Nagai, et al.. (2004). Candida albicans protein kinase CaHsl1p regulates cell elongation and virulence. Molecular Microbiology. 55(2). 381–395. 49 indexed citations

15.

Niimi, Masakazu, Yuki Nagai, Kyoko Niimi, et al.. (2002). Identification of two proteins induced by exposure of the pathogenic fungus Candida glabrata to fluconazole. Journal of Chromatography B. 782(1-2). 245–252. 32 indexed citations

16.

Wada, Shun‐ichi, Masakazu Niimi, Kyoko Niimi, et al.. (2002). Candida glabrata ATP-binding Cassette Transporters Cdr1p and Pdh1p Expressed in aSaccharomyces cerevisiae Strain Deficient in Membrane Transporters Show Phosphorylation-dependent Pumping Properties. Journal of Biological Chemistry. 277(48). 46809–46821. 49 indexed citations

17.

Niimi, Masakazu, Richard D. Cannon, & Brian C. Monk. (1999). Candida albicans pathogenicity: A proteomic perspective. Electrophoresis. 20(11). 2299–2308. 32 indexed citations

18.

Niimi, Masakazu, et al.. (1990). Initial attachment ofCandida albicans cells to buccal epithelial cells. Mycopathologia. 111(1). 61–66. 15 indexed citations

19.

Niimi, Masakazu, et al.. (1989). DNA homology between Candida albicans strains: Evidence to justify the synonymous status of C. stellatoidea. Mycopathologia. 107(1). 3–7. 12 indexed citations

20.

Niimi, Kyoko, et al.. (1988). Macroconidial Development and Germination in Trichophyton mentagrophytes. Journal of Investigative Dermatology. 90(2). 165–169. 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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