Seisuke Sayama

581 total citations
46 papers, 350 citations indexed

About

Seisuke Sayama is a scholar working on Obstetrics and Gynecology, Pediatrics, Perinatology and Child Health and Public Health, Environmental and Occupational Health. According to data from OpenAlex, Seisuke Sayama has authored 46 papers receiving a total of 350 indexed citations (citations by other indexed papers that have themselves been cited), including 26 papers in Obstetrics and Gynecology, 17 papers in Pediatrics, Perinatology and Child Health and 14 papers in Public Health, Environmental and Occupational Health. Recurrent topics in Seisuke Sayama's work include Pregnancy and preeclampsia studies (18 papers), Reproductive System and Pregnancy (9 papers) and Endometriosis Research and Treatment (9 papers). Seisuke Sayama is often cited by papers focused on Pregnancy and preeclampsia studies (18 papers), Reproductive System and Pregnancy (9 papers) and Endometriosis Research and Treatment (9 papers). Seisuke Sayama collaborates with scholars based in Japan, United States and China. Seisuke Sayama's co-authors include Takeshi Nagamatsu, Takayuki Iriyama, Tomoyuki Fujii, Yutaka Osuga, Ayako Hashimoto, Toshio Nakayama, Atsushi Komatsu, Keiichi Kumasawa, Osamu Nishii and Kei Kawana and has published in prestigious journals such as Blood, Scientific Reports and The FASEB Journal.

In The Last Decade

Seisuke Sayama

38 papers receiving 344 citations

Peers

Seisuke Sayama
Aleah Hazan Canada
Nina Pereza Croatia
Afsaneh Mohammadzadeh Iran
Ester Leno‐Durán Spain
M.D. Salazar Garcia United States
Zehra Sema Özkan Türkiye
Νικόλαος Πράπας Greece
Jinlu Ji China
Rafaella Petracco Brazil
Aleah Hazan Canada
Seisuke Sayama
Citations per year, relative to Seisuke Sayama Seisuke Sayama (= 1×) peers Aleah Hazan

Countries citing papers authored by Seisuke Sayama

Since Specialization
Citations

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

Fields of papers citing papers by Seisuke Sayama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Seisuke Sayama

This figure shows the co-authorship network connecting the top 25 collaborators of Seisuke Sayama. A scholar is included among the top collaborators of Seisuke Sayama 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 Seisuke Sayama. Seisuke Sayama 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.
Kumasawa, Keiichi, Seisuke Sayama, Takayuki Iriyama, et al.. (2024). The Effects of Low Concentrations of Pravastatin on Placental Cells. Reproductive Sciences. 31(10). 3139–3147. 3 indexed citations
2.
Sayama, Seisuke, Takayuki Iriyama, Kumi Nakazaki, et al.. (2023). A successful management of refractory immune thrombocytopenic purpura with Eltrombopag during pregnancy complicated with superimposed preeclampsia. Oxford Medical Case Reports. 2023(5). omad047–omad047. 1 indexed citations
3.
Fujii, T., Keiichi Kumasawa, Mari Ichinose, et al.. (2023). The sFlt-1/PlGF Ratio Trend Is Useful in Predicting Preeclampsia Severity in Hyperreactio Luteinalis Complicated with Preeclampsia. Case Reports in Obstetrics and Gynecology. 2023. 1–5.
4.
Nakajima, Keisuke, T. Fujii, Takayuki Iriyama, et al.. (2023). Efficacy of prompt administration of cryoprecipitate in severe postpartum hemorrhage of preeclampsia patients. Journal of obstetrics and gynaecology research. 49(12). 2811–2816. 3 indexed citations
5.
Kato, Kosuke, Takayuki Iriyama, Konan Hara, et al.. (2023). Increased risk of placenta previa and preterm birth in pregnant women with endometriosis/adenomyosis: A propensity‐score matching analysis of a nationwide perinatal database in Japan. Journal of obstetrics and gynaecology research. 50(3). 351–357. 2 indexed citations
6.
Iriyama, Takayuki, Jiro Sato, Osamu Abe, et al.. (2023). A Case of Ruptured Exophytic Uterine Artery Pseudoaneurysm without Specific Risk Factors That Manifested Seven Days after Vaginal Delivery. Case Reports in Obstetrics and Gynecology. 2023. 1–5.
7.
Sayama, Seisuke, Takayuki Iriyama, Ayako Hashimoto, et al.. (2023). Clinical characteristics and outcomes of women with adenomyosis pain during pregnancy: a retrospective study. Journal of Perinatal Medicine. 52(2). 186–191.
8.
Sayama, Seisuke, Takayuki Iriyama, Ayako Hashimoto, et al.. (2023). Possible risks and benefits of adenomyomectomy on pregnancy outcomes: a retrospective analysis. AJOG Global Reports. 3(4). 100265–100265. 4 indexed citations
9.
Ichinose, Mari, Takayuki Iriyama, Seisuke Sayama, et al.. (2022). Postpartum degeneration of adenomyosis with diffuse cyst‐like changes and localized hemorrhage detected by sequential magnetic resonance imaging. Journal of obstetrics and gynaecology research. 48(11). 2973–2978. 2 indexed citations
10.
Nakanishi, Megumi, Takayuki Iriyama, Seisuke Sayama, et al.. (2022). Pregnancy‐induced hemorrhagic degeneration of adenomyosis. Journal of obstetrics and gynaecology research. 48(5). 1265–1270. 5 indexed citations
11.
Iriyama, Takayuki, Seisuke Sayama, Kaori Kubota, et al.. (2022). The impact of fetal growth restriction in diagnosing preeclampsia on the severity of maternal features. Journal of obstetrics and gynaecology research. 48(4). 912–919. 4 indexed citations
12.
Iriyama, Takayuki, Seisuke Sayama, Atsushi Sato, et al.. (2022). Increased production of inflammatory cytokines and activation of microglia in the fetal brain of preeclamptic mice induced by angiotensin II. Journal of Reproductive Immunology. 154. 103752–103752. 6 indexed citations
13.
Iriyama, Takayuki, Seisuke Sayama, Mari Ichinose, et al.. (2022). The head direction to the angle of progression ratio: a quantitative parameter for intrapartum evaluation of cephalic malposition. American Journal of Obstetrics & Gynecology MFM. 5(1). 100755–100755. 4 indexed citations
14.
15.
Iriyama, Takayuki, Seisuke Sayama, Kan Suzuki, et al.. (2021). A Fetus with Imperforate Anus Developing Pulmonary Hypoplasia Triggered by Transient Urethral Obstruction. Case Reports in Obstetrics and Gynecology. 2021. 1–5.
16.
Nagamatsu, Takeshi, Takayuki Iriyama, Toshio Nakayama, et al.. (2020). Impact of additional risk factors on the incidence of preterm delivery among pregnant women diagnosed with short cervix. Taiwanese Journal of Obstetrics and Gynecology. 59(2). 195–199. 7 indexed citations
17.
Sayama, Seisuke, Anren Song, Benjamin C. Brown, et al.. (2020). Maternal erythrocyte ENT1–mediated AMPK activation counteracts placental hypoxia and supports fetal growth. JCI Insight. 5(10). 14 indexed citations
18.
Sayama, Seisuke, Takeshi Nagamatsu, Danny J. Schust, et al.. (2013). Human decidual macrophages suppress IFN-γ production by T cells through costimulatory B7-H1:PD-1 signaling in early pregnancy. Journal of Reproductive Immunology. 100(2). 109–117. 49 indexed citations
19.
Kawana, Kei, Tomoyuki Fujii, Danny J. Schust, et al.. (2011). A Possible Coagulation‐Independent Mechanism for Pregnancy Loss Involving β2glycoprotein 1‐Dependent Antiphospholipid Antibodies and CD1d. American Journal of Reproductive Immunology. 67(1). 54–65. 6 indexed citations
20.
Tanabe, Hiroki, et al.. (2001). A Case of Giant Extramammary Paget’s Disease of the Genital Area with Squamous-Cell Carcinoma. Dermatology. 202(3). 249–251. 6 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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