Ritsu Kusama

926 total citations
28 papers, 748 citations indexed

About

Ritsu Kusama is a scholar working on Pathology and Forensic Medicine, Oncology and Genetics. According to data from OpenAlex, Ritsu Kusama has authored 28 papers receiving a total of 748 indexed citations (citations by other indexed papers that have themselves been cited), including 9 papers in Pathology and Forensic Medicine, 8 papers in Oncology and 7 papers in Genetics. Recurrent topics in Ritsu Kusama's work include Cancer Risks and Factors (7 papers), Epigenetics and DNA Methylation (5 papers) and Nutritional Studies and Diet (4 papers). Ritsu Kusama is often cited by papers focused on Cancer Risks and Factors (7 papers), Epigenetics and DNA Methylation (5 papers) and Nutritional Studies and Diet (4 papers). Ritsu Kusama collaborates with scholars based in Japan, Brazil and United States. Ritsu Kusama's co-authors include Hiroshi Onuma, Hideki Nishimura, Yoshio Kasuga, Shoichiro Tsugane, Shiro Yokoyama, Motoki Iwasaki, Hiroaki Itoh, Kazuhito Yokoyama, Teruhiko Yoshida and Minatsu Kobayashi and has published in prestigious journals such as The Science of The Total Environment, British Journal of Cancer and Cancer Letters.

In The Last Decade

Ritsu Kusama

27 papers receiving 727 citations

Peers

Ritsu Kusama
Yoshio Kasuga Japan
Nat Rothman United States
Steven H. Lamm United States
Kathryn Hughes Barry United States
Zdeněk Šmerhovský Czechia
J. S. Morris United States
Marco Russo Italy
Dina M. Schreinemachers United States
Jason L. Nelles United States
Yanqiu Ou China
Yoshio Kasuga Japan
Ritsu Kusama
Citations per year, relative to Ritsu Kusama Ritsu Kusama (= 1×) peers Yoshio Kasuga

Countries citing papers authored by Ritsu Kusama

Since Specialization
Citations

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

Fields of papers citing papers by Ritsu Kusama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ritsu Kusama

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

All Works

20 of 20 papers shown
1.
Itoh, Hiroaki, Kouji H. Harada, Yoshio Kasuga, et al.. (2022). Association between serum concentrations of perfluoroalkyl substances and global DNA methylation levels in peripheral blood leukocytes of Japanese women: A cross-sectional study. The Science of The Total Environment. 859(Pt 1). 159923–159923. 11 indexed citations
2.
Itoh, Hiroaki, Yoshio Kasuga, Shiro Yokoyama, et al.. (2014). Association between serum organochlorines and global methylation level of leukocyte DNA among Japanese women: a cross-sectional study. The Science of The Total Environment. 490. 603–609. 42 indexed citations
3.
Itoh, Hiroaki, Motoki Iwasaki, Norie Sawada, et al.. (2013). Dietary cadmium intake and breast cancer risk in Japanese women: A case–control study. International Journal of Hygiene and Environmental Health. 217(1). 70–77. 124 indexed citations
4.
Iwasaki, Motoki, Junki Mizusawa, Yoshio Kasuga, et al.. (2013). Green Tea Consumption and Breast Cancer Risk in Japanese Women: A Case-Control Study. Nutrition and Cancer. 66(1). 57–67. 30 indexed citations
5.
Kuchiba, Aya, Yoshio Kasuga, Shiro Yokoyama, et al.. (2012). Association of dietary and genetic factors related to one‐carbon metabolism with global methylation level of leukocyte DNA. Cancer Science. 103(12). 2159–2164. 37 indexed citations
6.
Kuchiba, Aya, Yoshio Kasuga, Shiro Yokoyama, et al.. (2012). Association of postmenopausal endogenous sex hormones with global methylation level of leukocyte DNA among Japanese women. BMC Cancer. 12(1). 323–323. 14 indexed citations
7.
Iwasaki, Motoki, Yoshio Kasuga, Shiro Yokoyama, et al.. (2011). Comparison of postmenopausal endogenous sex hormones among Japanese, Japanese Brazilians, and non-Japanese Brazilians. BMC Medicine. 9(1). 16–16. 6 indexed citations
8.
Iwasaki, Motoki, Gerson Shigeaki Hamada, Inês Nobuko Nishimoto, et al.. (2010). Dietary Isoflavone Intake, Polymorphisms in the CYP17, CYP19, 17β-HSD1, and SHBG Genes, and Risk of Breast Cancer in Case-Control Studies in Japanese, Japanese Brazilians, and Non-Japanese Brazilians. Nutrition and Cancer. 62(4). 466–475. 18 indexed citations
9.
Iwasaki, Motoki, Naoki Shimada, Yoshio Kasuga, et al.. (2010). Fragment c gamma receptor gene polymorphisms and breast cancer risk in case–control studies in Japanese, Japanese Brazilians, and non-Japanese Brazilians. Breast Cancer Research and Treatment. 126(2). 497–505. 13 indexed citations
10.
Iwasaki, Motoki, Gerson Shigeaki Hamada, Inês Nobuko Nishimoto, et al.. (2009). Isoflavone, polymorphisms in estrogen receptor genes and breast cancer risk in case‐control studies in Japanese, Japanese Brazilians and non‐Japanese Brazilians. Cancer Science. 100(5). 927–933. 30 indexed citations
11.
Ma, Enbo, Motoki Iwasaki, Minatsu Kobayashi, et al.. (2009). Dietary Intake of Folate, Vitamin B2, Vitamin B6, Vitamin B12, Genetic Polymorphism of Related Enzymes, and Risk of Breast Cancer: A Case-Control Study in Japan. Nutrition and Cancer. 61(4). 447–456. 63 indexed citations
12.
Shimada, Naoki, Yoshio Kasuga, Shiro Yokoyama, et al.. (2009). Genetic polymorphisms in estrogen metabolism and breast cancer risk in case–control studies in Japanese, Japanese Brazilians and non-Japanese Brazilians. Journal of Human Genetics. 54(4). 209–215. 34 indexed citations
13.
Iwasaki, Motoki, Gerson Shigeaki Hamada, Inês Nobuko Nishimoto, et al.. (2008). Dietary isoflavone intake and breast cancer risk in case–control studies in Japanese, Japanese Brazilians, and non-Japanese Brazilians. Breast Cancer Research and Treatment. 116(2). 401–411. 37 indexed citations
14.
Itoh, Hiroaki, Motoki Iwasaki, Tomoyuki Hanaoka, et al.. (2008). Serum organochlorines and breast cancer risk in Japanese women: a case–control study. Cancer Causes & Control. 20(5). 567–580. 62 indexed citations
15.
Ito, Tokiko, et al.. (2007). A CASE OF BREAST TUBULAR ADENOMA IN A 15-YEAR-OLD FEMALE. Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association). 68(8). 1914–1917. 2 indexed citations
16.
Kusama, Ritsu, et al.. (2006). A Case of Pseudomyxoma Peritonei with Splenic Metastasis from Mucinous Cystadenocarcinoma of the Appendix. The Japanese Journal of Gastroenterological Surgery. 39(3). 377–383. 1 indexed citations
17.
Kusama, Ritsu, Fumiyoshi Takayama, & Shin‐ichi Tsuchiya. (2005). MRI of the breast: comparison of MRI signals and histological characteristics of the same slices. Medical Molecular Morphology. 38(4). 204–215. 14 indexed citations
18.
Kusama, Ritsu, et al.. (2004). Hyalinizing trabecular adenoma of the thyroid: report of a case diagnosed with aspiration cytology. The Journal of the Japanese Society of Clinical Cytology. 43(4). 281–285. 2 indexed citations
19.
Asanuma, Kazuhiko, et al.. (2001). Macroscopic extranodal invasion is a risk factor for tumor recurrence in papillary thyroid cancer. Cancer Letters. 164(1). 85–89. 23 indexed citations
20.
Kusama, Ritsu, Maiko Fujimori, Li Fu, et al.. (2000). Clinicopathological characteristics of atypical cystic duct (ACD) of the breast: Assessment of ACD as a precancerous lesion. Pathology International. 50(10). 793–800. 33 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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