Sonoko Nagai

9.1k total citations · 2 hit papers
117 papers, 5.8k citations indexed

About

Sonoko Nagai is a scholar working on Pulmonary and Respiratory Medicine, Physiology and Epidemiology. According to data from OpenAlex, Sonoko Nagai has authored 117 papers receiving a total of 5.8k indexed citations (citations by other indexed papers that have themselves been cited), including 89 papers in Pulmonary and Respiratory Medicine, 55 papers in Physiology and 20 papers in Epidemiology. Recurrent topics in Sonoko Nagai's work include Interstitial Lung Diseases and Idiopathic Pulmonary Fibrosis (78 papers), Sarcoidosis and Beryllium Toxicity Research (45 papers) and Medical Imaging and Pathology Studies (18 papers). Sonoko Nagai is often cited by papers focused on Interstitial Lung Diseases and Idiopathic Pulmonary Fibrosis (78 papers), Sarcoidosis and Beryllium Toxicity Research (45 papers) and Medical Imaging and Pathology Studies (18 papers). Sonoko Nagai collaborates with scholars based in Japan, United States and United Kingdom. Sonoko Nagai's co-authors include Takateru Izumi, Michiaki Mishima, Tomohiro Handa, Masanori Kitaichi, Etsuro Sato, Sekiya Koyama, Kunio Hamada, Michio Shigematsu, Takateru Izumi and Harumi Itoh and has published in prestigious journals such as The Journal of Immunology, PLoS ONE and American Journal of Respiratory and Critical Care Medicine.

In The Last Decade

Sonoko Nagai

115 papers receiving 5.7k 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.

An Official American Thoracic Society Clinical Practice Guideline: The Clinical Utility of Bronchoalveolar Lavage Cellular Analysis in Interstitial Lung Disease

2012 720 citations Keith C. Meyer, Ganesh Raghu et al. American Journal of Respiratory and Critical Care Medicine profile →
Double-blind, Placebo-controlled Trial of Pirfenidone in Patients with Idiopathic Pulmonary Fibrosis

2005 681 citations Arata Azuma, Toshihiro Nukiwa et al. American Journal of Respiratory and Critical Care Medicine profile →

Peers

Countries citing papers authored by Sonoko Nagai

Since Specialization

Citations

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

Fields of papers citing papers by Sonoko Nagai

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Sonoko Nagai

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

#	Work	Indexed citations
1	Clinical significance of radiological pleuroparenchymal fibroelastosis pattern in interstitial lung disease patients registered for lung transplantation: a retrospective cohort study 2018 ·Respiratory Research ·Kiminobu Tanizawa, Tomohiro Handa, Takeshi Kubo, Toyofumi F. Chen‐Yoshikawa, Akihiro Aoyama, Hideki Motoyama, Kyoko Hijiya, Akihiko Yoshizawa, (unknown), Kohei Ikezoe, Shinsaku Tokuda, Yoshinari Nakatsuka, Yuko Murase, Sonoko Nagai, Shigeo Muro, Toru Oga, Kazuo Chin, Toyohiro Hirai, Hiroshi Date	28
2	Impaired endothelium-dependent vasodilator response in patients with pulmonary fibrosis 2012 ·Respiratory Medicine ·Kensaku Aihara, Tomohiro Handa, Sonoko Nagai, Kiminobu Tanizawa, Kohei Ikezoe, Kizuku Watanabe, Yuichi Chihara, Yuka Harada, Chikara Yoshimura, Toru Oga, Neiko Ozasa, Kazuko Uno, Kazuo Chin, Michiaki Mishima	14
3	An Official American Thoracic Society Clinical Practice Guideline: The Clinical Utility of Bronchoalveolar Lavage Cellular Analysis in Interstitial Lung Disease breakdown → 2012 ·American Journal of Respiratory and Critical Care Medicine ·Keith C. Meyer, Ganesh Raghu, Robert P. Baughman, Kevin M. Brown, Ulrich Costabel, Roland M. du Bois, Marjolein Drent, Patricia Haslam, Dong Soon Kim, Sonoko Nagai, Paola Rottoli, Cesare Saltini, Moisés Selman, Charlie Strange, Brent Wood	720
4	Detection of antisynthetase syndrome in patients with idiopathic interstitial pneumonias 2011 ·Respiratory Medicine ·Kizuku Watanabe, Tomohiro Handa, Kiminobu Tanizawa, Yuji Hosono, Yoshio Taguchi, Satoshi Noma, Yoichiro Kobashi, Takeshi Kubo, Kensaku Aihara, Kazuo Chin, Sonoko Nagai, Tsuneyo Mimori, Michiaki Mishima	89
5	HRCT features of interstitial lung disease in dermatomyositis with anti-CADM-140 antibody 2011 ·Respiratory Medicine ·Kiminobu Tanizawa, Tomohiro Handa, Ran Nakashima, Takeshi Kubo, Yuji Hosono, Kizuku Watanabe, Kensaku Aihara, Toru Oga, Kazuo Chin, Sonoko Nagai, Tsuneyo Mimori, Michiaki Mishima	106
6	Determination of desmosine in bronchoalveolar lavage fluids by time-resolved fluoroimmunoassay 2007 ·Clinica Chimica Acta ·Takaji Sato, (unknown), Yoshihiro Saito, Masahiko Chikuma, Sonoko Nagai	2
7	Pulmonary hypertension and granulomatous vasculitis in sarcoidosis 2007 ·Current Opinion in Pulmonary Medicine ·Hidenobu Shigemitsu, Sonoko Nagai, Om P. Sharma	25
8	Incidence of Pulmonary Hypertension and Its Clinical Relevance in Patients With Sarcoidosis 2006 ·CHEST Journal ·Tomohiro Handa, Sonoko Nagai, Shinji Miki, Yasutaka Fushimi, Kosuke Ohta, Michiaki Mishima, Takateru Izumi	187
9	Double-blind, Placebo-controlled Trial of Pirfenidone in Patients with Idiopathic Pulmonary Fibrosis breakdown → 2005 ·American Journal of Respiratory and Critical Care Medicine ·Arata Azuma, Toshihiro Nukiwa, Eiyasu Tsuboi, Moritaka Suga, Shosaku Abe, Koichiro Nakata, Yoshio Taguchi, Sonoko Nagai, Harumi Itoh, Motoharu Ohi, Atsuhiko Sato, Shoji Kudoh, (unknown)	681
10	Matrix Metalloproteinase-9 Promoter Polymorphism Associated with Upper Lung Dominant Emphysema 2005 ·American Journal of Respiratory and Critical Care Medicine ·Isao Ito, Sonoko Nagai, Tomohiro Handa, Shigeo Muro, Toyohiro Hirai, Mitsuhiro Tsukino, Michiaki Mishima	123
11	Pulmonary Manifestations of Primary Sjogren's Syndrome 2004 ·American Journal of Respiratory and Critical Care Medicine ·Isao Ito, Sonoko Nagai, Masanori Kitaichi, Andrew G. Nicholson, Takeshi Johkoh, Satoshi Noma, Dong Soon Kim, Tomohiro Handa, Takateru Izumi, Michiaki Mishima	228
12	The Clara Cell10 Adenine38Guanine Polymorphism and Sarcoidosis Susceptibility in Dutch and Japanese Subjects 2004 ·American Journal of Respiratory and Critical Care Medicine ·Rob Janssen, Hiroe Sato, Jan C. Grutters, Henk J.T. Ruven, R M du Bois, Ryosuke Matsuura, Masao Yamazaki, (unknown), Takateru Izumi, Ken I. Welsh, Sonoko Nagai, Jules M.M. van den Bosch	11
13	Differential effects of fosfomycin and corticosteroid on the molar ratio of interleukin-1 receptor antagonist/interleukin-1β in the culture supernatants of mononuclear phagocytes from patients with sarcoidosis 2004 ·Journal of Infection and Chemotherapy ·(unknown), Sonoko Nagai, Takateru Izumi, (unknown)	1
14	Nonspecific interstitial pneumonia: a real clinical entity? 2004 ·Clinics in Chest Medicine ·Sonoko Nagai, Tomohiro Handa, (unknown), Masanori Kitaichi, Takateru Izumi	14
15	Decreased Level of Vascular Endothelial Growth Factor in Bronchoalveolar Lavage Fluid of Normal Smokers and Patients with Pulmonary Fibrosis 2002 ·American Journal of Respiratory and Critical Care Medicine ·Sekiya Koyama, Etsuro Sato, Masayuki Haniuda, Hiroki Numanami, Sonoko Nagai, Takateru Izumi	124
16	Fibroblast Contractility 2000 ·American Journal of Respiratory and Critical Care Medicine ·Hiroyuki Miki, Tadashi Mio, Sonoko Nagai, Yuma Hoshino, Taishi Nagao, Masanori Kitaichi, Takateru Izumi	30
17	Classification and recent advances in idiopathic interstitial pneumonia 1998 ·Current Opinion in Pulmonary Medicine ·Sonoko Nagai, Masanori Kitaichi, Takateru Izumi	17
18	Studies on the Constituents of Aceraceae Plants (X) : Isolation of Flavonoid Glycosides and a Cerebroside from the Leaves of Acer negundo 1992 ·Takao Inoué, Nobuko Sakurai, Sonoko Nagai, Masahiro Nagai	4
19	Bronchoalveolar Lavage Cell Findings in Patients with BOOP and Related Diseases 1992 ·CHEST Journal ·Sonoko Nagai, Htin Aung, (unknown), N Satake, (unknown), (unknown), (unknown), Masanori Kitaichi, Takateru Izumi	47
20	Proliferative Characteristics of Fibroblast Lines Derived from Open Lung Biopsy Specimens of Patients with IPF (UIP) 1992 ·CHEST Journal ·Tadashi Mio, Sonoko Nagai, Masanori Kitaichi, (unknown), Takateru Izumi	36

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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