Norimasa Sagawa

6.0k total citations · 1 hit paper
144 papers, 4.7k citations indexed

About

Norimasa Sagawa is a scholar working on Obstetrics and Gynecology, Pediatrics, Perinatology and Child Health and Epidemiology. According to data from OpenAlex, Norimasa Sagawa has authored 144 papers receiving a total of 4.7k indexed citations (citations by other indexed papers that have themselves been cited), including 46 papers in Obstetrics and Gynecology, 37 papers in Pediatrics, Perinatology and Child Health and 33 papers in Epidemiology. Recurrent topics in Norimasa Sagawa's work include Pregnancy and preeclampsia studies (37 papers), Birth, Development, and Health (26 papers) and Regulation of Appetite and Obesity (20 papers). Norimasa Sagawa is often cited by papers focused on Pregnancy and preeclampsia studies (37 papers), Birth, Development, and Health (26 papers) and Regulation of Appetite and Obesity (20 papers). Norimasa Sagawa collaborates with scholars based in Japan, United States and Sweden. Norimasa Sagawa's co-authors include Yoshihiro Ogawa, Hiroaki Masuzaki, Kazuwa Nakao, Takahide Mori, Shigeo Yura, Hiroko Mise, Tsunekazu Matsumoto, Shingo Fujii, Kiminori Hosoda and Issei Tanaka and has published in prestigious journals such as Journal of Biological Chemistry, Journal of Clinical Investigation and Nature Medicine.

In The Last Decade

Norimasa Sagawa

139 papers receiving 4.6k 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.

Nonadipose tissue production of leptin: Leptin as a novel placenta-derived hormone in humans

1997 1.0k citations Hiroaki Masuzaki, Yoshihiro Ogawa et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Norimasa Sagawa Japan	34	1.5k	1.4k	1.4k	1.3k	1.2k	144	4.7k
Sylvie Hauguel‐de Mouzon United States	38	744 0.5×	3.7k 2.7×	3.0k 2.2×	1.1k 0.8×	980 0.8×	67	5.8k
Marie‐Noëlle Dieudonné France	26	553 0.4×	456 0.3×	372 0.3×	774 0.6×	922 0.7×	56	2.7k
Patricia Vuguin United States	30	636 0.4×	382 0.3×	881 0.6×	1.0k 0.8×	633 0.5×	66	3.1k
Antonio Pérez‐Pérez Spain	24	734 0.5×	501 0.4×	351 0.3×	674 0.5×	774 0.6×	78	2.5k
Jörg Dötsch Germany	31	382 0.3×	928 0.7×	1.3k 0.9×	572 0.4×	365 0.3×	200	3.1k
Ronald R. Magness United States	48	221 0.2×	2.9k 2.1×	1.9k 1.4×	1.5k 1.1×	200 0.2×	171	6.8k
Chandra Yallampalli United States	39	155 0.1×	1.4k 1.0×	1.2k 0.9×	1.1k 0.9×	408 0.3×	170	4.8k
Josie McConnell United Kingdom	22	149 0.1×	604 0.4×	1.6k 1.1×	782 0.6×	315 0.3×	40	2.8k
N Surico Italy	25	749 0.5×	286 0.2×	104 0.1×	675 0.5×	420 0.3×	100	2.6k
Jorge Eduardo Caminos Colombia	23	1.1k 0.7×	180 0.1×	162 0.1×	843 0.7×	563 0.5×	54	2.1k

Countries citing papers authored by Norimasa Sagawa

Since Specialization

Citations

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

Fields of papers citing papers by Norimasa Sagawa

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Norimasa Sagawa

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

Nemoto, Takahiro & Norimasa Sagawa. (2023). Prevention of transgenerational transmission of disease susceptibility through perinatal intervention. Endocrine Journal. 71(3). 209–222. 1 indexed citations

Sugiyama, Takashi, et al.. (2022). Screening methods for gestational diabetes mellitus in Japan in 2018: a retrospective cohort study using a national surveillance questionnaire. Endocrine Journal. 69(11). 1313–1322. 5 indexed citations

Tabata, Tsutomu, et al.. (2008). Fine needle aspiration cytology of malignant mixed tumour of the vulva. Cytopathology. 20(3). 199–201.

Yura, Shigeo, Hiroaki Itoh, Norimasa Sagawa, et al.. (2008). Neonatal Exposure to Leptin Augments Diet‐induced Obesity in Leptin‐deficient Ob/Ob Mice. Obesity. 16(6). 1289–1295. 27 indexed citations

Teramura, Takeshi, Toshiyuki Takehara, Toshihiro Mihara, et al.. (2007). A Mouse and Embryonic Stem Cell Derived from a Single Embryo. Cloning and Stem Cells. 9(4). 485–494. 5 indexed citations

Teramura, Takeshi, Toshiyuki Takehara, N. Kawata, et al.. (2007). Primate Embryonic Stem Cells Proceed to Early Gametogenesis In Vitro. Cloning and Stem Cells. 9(2). 144–156. 38 indexed citations

Nuamah, Mercy A., Norimasa Sagawa, Hiroaki Itoh, et al.. (2003). Significant increase in maternal plasma leptin concentration during induced labor : A possible contribution of pro-inflammatory cytokines to placental leptin secretion(Session20 Peninatology5) :. 55(2). 530. 1 indexed citations

Kakui, Kazuyo, Norimasa Sagawa, Hiroaki Itoh, et al.. (2003). Expression of Nitric Oxide Synthase Isoforms in the Human Placenta Is Not Altered by Labor. Endocrine Journal. 50(5). 535–544. 16 indexed citations

Korita, Daizo, Norimasa Sagawa, Hiroaki Itoh, et al.. (2002). Cyclic Mechanical Stretch Augments Prostacyclin Production in Cultured Human Uterine Myometrial Cells from Pregnant Women: Possible Involvement of Up-Regulation of Prostacyclin Synthase Expression. The Journal of Clinical Endocrinology & Metabolism. 87(11). 5209–5219. 32 indexed citations

10.

Yura, Shigeo, Yoshihiro Ogawa, Norimasa Sagawa, et al.. (2000). Accelerated puberty and late-onset hypothalamic hypogonadism in female transgenic skinny mice overexpressing leptin. Journal of Clinical Investigation. 105(6). 749–755. 112 indexed citations

11.

Sagawa, Norimasa, Hiroaki Itoh, Tsunekazu Matsumoto, et al.. (1999). Leptin as a novel placenta-derived hormone in humans. Placenta. 20. 25–34. 3 indexed citations

12.

Nanno, Hidetaka, Norimasa Sagawa, Hiroshi Itoh, et al.. (1998). Plasma nitric oxide metabolite levels are decreased in pre-eclamptic women complicated with fetal distress. 3(2). 222–226. 4 indexed citations

13.

Yura, Shigeo, Norimasa Sagawa, Yoshihiro Ogawa, et al.. (1998). Augmentation of Leptin Synthesis and Secretion Through Activation of Protein Kinases A and C in Cultured Human Trophoblastic Cells¹. The Journal of Clinical Endocrinology & Metabolism. 83(10). 3609–3614. 46 indexed citations

14.

Matsumoto, Tsunekazu, Norimasa Sagawa, Masahiro Yoshida, et al.. (1997). The Prostaglandin E2and F2αReceptor Genes Are Expressed in Human Myometrium and Are Down-regulated during Pregnancy. Biochemical and Biophysical Research Communications. 238(3). 838–841. 62 indexed citations

15.

Kobayashi, Fuminori, et al.. (1996). Rapid Growth of an Ovarian Clear Cell Carcinoma Expressing LH/hCG Receptor Arising from Endometriosis during Early Pregnancy. Gynecologic Oncology. 62(2). 309–313. 24 indexed citations

16.

Hasegawa, Masaaki, Norimasa Sagawa, Hidetaka Nanno, et al.. (1996). Endothelin-1-like immunoreactivity and endothelin receptors in the human placenta from normotensive and hypertensive pregnancies. Journal of Perinatal Medicine. 24(5). 451–460. 5 indexed citations

17.

Kobayashi, Fuminori, Norimasa Sagawa, Yoshihiko Nanbu, et al.. (1995). Molecular interaction during pregnancy: Biochemical and topological analysis of adult T-cell leukaemia-derived factor, homologous to thioredoxin, in the pregnant human uterus. Human Reproduction. 10(6). 1603–1608. 31 indexed citations

18.

Itoh, Hiroaki, Norimasa Sagawa, Masaaki Hasegawa, et al.. (1993). Brain Natriuretic Peptide Levels in the Umbilical Venous Plasma Are Elevated in Fetal Distress. Neonatology. 64(1). 18–25. 27 indexed citations

19.

Li, Xiaomei, Norimasa Sagawa, Yoshiyuki Ihara, et al.. (1991). The Involvement of Platelet-Activating Factor in Thrombocytopenia and Follicular Rupture During Gonadotropin-Induced Superovulation in Immature Rats*. Endocrinology. 129(6). 3132–3138. 21 indexed citations

20.

Kobayashi, Fuminori, et al.. (1989). Mechanism and clinical significance of elevated CA 125 levels in the sera of pregnant women. American Journal of Obstetrics and Gynecology. 160(3). 563–566. 61 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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