Nagisa Hara

644 total citations
18 papers, 439 citations indexed

About

Nagisa Hara is a scholar working on Epidemiology, Hepatology and Physiology. According to data from OpenAlex, Nagisa Hara has authored 18 papers receiving a total of 439 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Epidemiology, 12 papers in Hepatology and 8 papers in Physiology. Recurrent topics in Nagisa Hara's work include Liver Disease Diagnosis and Treatment (14 papers), Liver Disease and Transplantation (11 papers) and Nutrition and Health in Aging (8 papers). Nagisa Hara is often cited by papers focused on Liver Disease Diagnosis and Treatment (14 papers), Liver Disease and Transplantation (11 papers) and Nutrition and Health in Aging (8 papers). Nagisa Hara collaborates with scholars based in Japan and India. Nagisa Hara's co-authors include Motoh Iwasa, Yoshinao Kobayashi, Yoshiyuki Takei, Ryosuke Sugimoto, Rumi Mifuji‐Moroka, Kazuko Iwata, Naoki Fujita, Hideaki Tanaka, Hiroshi Hasegawa and Kyoko Yoshikawa and has published in prestigious journals such as PLoS ONE, Free Radical Biology and Medicine and Nutrition.

In The Last Decade

Nagisa Hara

17 papers receiving 431 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Nagisa Hara Japan 12 237 235 174 64 61 18 439
Sabrina Alves Fernandes Brazil 13 232 1.0× 302 1.3× 210 1.2× 78 1.2× 89 1.5× 42 566
Katharina Lampichler Austria 12 108 0.5× 170 0.7× 202 1.2× 43 0.7× 32 0.5× 25 379
Takumi Akiyama Japan 12 82 0.3× 272 1.2× 249 1.4× 39 0.6× 21 0.3× 25 534
Naoki Kawagishi Japan 12 74 0.3× 213 0.9× 248 1.4× 32 0.5× 23 0.4× 41 434
Francisco Mesonero Spain 9 112 0.5× 283 1.2× 199 1.1× 24 0.4× 21 0.3× 31 430
Tomomi Okubo Japan 13 56 0.2× 238 1.0× 190 1.1× 50 0.8× 26 0.4× 39 364
Mamie H. Dong United States 8 60 0.3× 225 1.0× 131 0.8× 47 0.7× 8 0.1× 8 337
Khaled Dajani Canada 14 101 0.4× 101 0.4× 189 1.1× 64 1.0× 38 0.6× 38 586
Han Ah Lee South Korea 11 78 0.3× 180 0.8× 205 1.2× 16 0.3× 15 0.2× 29 341
Luigina Vanessa Alemanni Italy 12 113 0.5× 287 1.2× 286 1.6× 10 0.2× 24 0.4× 24 402

Countries citing papers authored by Nagisa Hara

Since Specialization
Citations

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

Fields of papers citing papers by Nagisa Hara

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Nagisa Hara

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

All Works

18 of 18 papers shown
1.
Hiraoka, Atsushi, Tadashi Namisaki, Masato Nakai, et al.. (2025). Relationship between Daily Physical Activity and Muscle Cramping in Elderly Liver Cirrhosis Patients: A Multicenter Study. Internal Medicine. 64(19). 2817–2822.
2.
Hara, Nagisa, Atsushi Hiraoka, Masato Nakai, et al.. (2024). Brief intervention for chronic liver disease patients with alcohol use disorder in a hepatology outpatient unit: Effects and limitations. Hepatology Research. 54(11). 1099–1105. 2 indexed citations
3.
Hiraoka, Atsushi, Masato Nakai, Nagisa Hara, et al.. (2022). Clinical features of patients with chronic liver disease in Japan related to alcohol use: Nationwide examination using alcohol use disorders identification test. Hepatology Research. 53(1). 43–50. 3 indexed citations
4.
Nishikawa, Hiroki, Makoto Shiraki, Akira Hiramatsu, et al.. (2021). Reduced handgrip strength predicts poorer survival in chronic liver diseases: A large multicenter study in Japan. Hepatology Research. 51(9). 957–967. 47 indexed citations
5.
Sumida, Yoshio, Masato Yoneda, Yuya Seko, et al.. (2021). Role of vitamin E in the treatment of non-alcoholic steatohepatitis. Free Radical Biology and Medicine. 177. 391–403. 23 indexed citations
6.
Sugimoto, Ryosuke, Motoh Iwasa, Nagisa Hara, et al.. (2017). Changes in liver function and body composition by direct‐acting antiviral therapy for hepatitis C virus infection. Hepatology Research. 48(5). 337–344. 24 indexed citations
7.
Kobayashi, Yoshinao, Nagisa Hara, Ryosuke Sugimoto, et al.. (2017). The Associations between Circulating Bile Acids and the Muscle Volume in Patients with Non-alcoholic Fatty Liver Disease (NAFLD). Internal Medicine. 56(7). 755–762. 32 indexed citations
8.
Iwasa, Motoh, Ryosuke Sugimoto, Nagisa Hara, Rumi Mifuji‐Moroka, & Yoshiyuki Takei. (2016). <b>Hyponatremia Observed in Hepatic Cirrhosis is Associated with Renal Function, Use of Diuretics and Survival</b>. Rinsho yakuri/Japanese Journal of Clinical Pharmacology and Therapeutics. 47(1). 21–24. 2 indexed citations
9.
Iwasa, Motoh, Ryosuke Sugimoto, Rumi Mifuji‐Moroka, et al.. (2016). Factors contributing to the development of overt encephalopathy in liver cirrhosis patients. Metabolic Brain Disease. 31(5). 1151–1156. 19 indexed citations
10.
Hara, Nagisa, Motoh Iwasa, Ryosuke Sugimoto, et al.. (2016). Sarcopenia and Sarcopenic Obesity Are Prognostic Factors for Overall Survival in Patients with Cirrhosis. Internal Medicine. 55(8). 863–870. 87 indexed citations
11.
Iwasa, Motoh, et al.. (2015). Body composition in patients with liver cirrhosis: Survival prognosis and sex differences. Nutrition & Dietetics. 72(3). 299–301. 1 indexed citations
12.
Iwasa, Motoh, Kazuko Iwata, Nagisa Hara, et al.. (2013). Nutrition therapy using a multidisciplinary team improves survival rates in patients with liver cirrhosis. Nutrition. 29(11-12). 1418–1421. 62 indexed citations
13.
Iwasa, Motoh, Yoshinao Kobayashi, Rumi Mifuji‐Moroka, et al.. (2013). Branched-Chain Amino Acid Supplementation Reduces Oxidative Stress and Prolongs Survival in Rats with Advanced Liver Cirrhosis. PLoS ONE. 8(7). e70309–e70309. 57 indexed citations
14.
Iwasa, Motoh, Rumi Mifuji‐Moroka, Nagisa Hara, et al.. (2011). Visceral fat volume predicts new-onset type 2 diabetes in patients with chronic hepatitis C. Diabetes Research and Clinical Practice. 94(3). 468–470. 12 indexed citations
15.
Iwasa, Motoh, Nagisa Hara, Kazuko Iwata, et al.. (2010). Restriction of calorie and iron intake results in reduction of visceral fat and serum alanine aminotransferase and ferritin levels in patients with chronic liver disease. Hepatology Research. 40(12). 1188–1194. 21 indexed citations
16.
Iwasa, Motoh, Nagisa Hara, Hideaki Tanaka, et al.. (2009). Patients achieving clearance of HCV with interferon therapy recover from decreased retinol‐binding protein 4 levels. Journal of Viral Hepatitis. 16(10). 716–723. 9 indexed citations
17.
Sugimoto, Ryosuke, Naoki Fujita, Naohisa Tomosugi, et al.. (2009). Impaired regulation of serum hepcidin during phlebotomy in patients with chronic hepatitis C. Hepatology Research. 39(6). 619–624. 14 indexed citations
18.
Hara, Nagisa, Motoh Iwasa, Kazuko Iwata, et al.. (2009). Value of the extracellular water ratio for assessment of cirrhotic patients with and without ascites. Hepatology Research. 39(11). 1072–1079. 24 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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