Steven T. Nakajima

4.5k total citations · 1 hit paper
80 papers, 3.2k citations indexed

About

Steven T. Nakajima is a scholar working on Public Health, Environmental and Occupational Health, Reproductive Medicine and Immunology. According to data from OpenAlex, Steven T. Nakajima has authored 80 papers receiving a total of 3.2k indexed citations (citations by other indexed papers that have themselves been cited), including 42 papers in Public Health, Environmental and Occupational Health, 40 papers in Reproductive Medicine and 18 papers in Immunology. Recurrent topics in Steven T. Nakajima's work include Ovarian function and disorders (26 papers), Reproductive Biology and Fertility (24 papers) and Reproductive System and Pregnancy (17 papers). Steven T. Nakajima is often cited by papers focused on Ovarian function and disorders (26 papers), Reproductive Biology and Fertility (24 papers) and Reproductive System and Pregnancy (17 papers). Steven T. Nakajima collaborates with scholars based in United States, Japan and Malaysia. Steven T. Nakajima's co-authors include Sandra Ann Carson, Michael P. Steinkampf, Donna L. Vogel, David S. Guzick, Joseph A. Hill, Pauline Cisneros, Charlene Brazil, Dong Xu, James W. Overstreet and Mark Gibson and has published in prestigious journals such as New England Journal of Medicine, The Journal of Clinical Endocrinology & Metabolism and Environmental Health Perspectives.

In The Last Decade

Steven T. Nakajima

80 papers receiving 3.1k 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.

Sperm Morphology, Motility, and Concentration in Fertile and Infertile Men

2001 924 citations David S. Guzick, Charlene Brazil et al. New England Journal of Medicine profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Steven T. Nakajima United States	26	2.1k	1.6k	694	546	376	80	3.2k
Michael P. Steinkampf United States	22	2.7k 1.3×	1.9k 1.2×	732 1.1×	569 1.0×	380 1.0×	77	3.6k
D. Loutradis Greece	29	1.6k 0.8×	1.5k 0.9×	548 0.8×	403 0.7×	466 1.2×	156	2.7k
Eitan Lunenfeld Israel	30	1.8k 0.8×	1.5k 0.9×	619 0.9×	270 0.5×	430 1.1×	146	3.2k
Charles Kingsland United Kingdom	25	1.4k 0.7×	1.1k 0.7×	464 0.7×	290 0.5×	395 1.1×	83	2.1k
Guido Ambrosini Italy	33	1.5k 0.7×	929 0.6×	623 0.9×	1.1k 2.1×	463 1.2×	120	3.0k
Peter G.A. Hompes Netherlands	38	3.4k 1.6×	2.1k 1.3×	1.7k 2.4×	1.1k 2.1×	471 1.3×	169	4.5k
Matts Wikland Sweden	39	2.8k 1.3×	2.4k 1.5×	1.7k 2.5×	988 1.8×	465 1.2×	109	4.6k
Ian Craft United Kingdom	34	1.7k 0.8×	1.6k 1.0×	1.2k 1.8×	484 0.9×	241 0.6×	191	3.5k
Carlo Bulletti Italy	34	2.9k 1.4×	1.4k 0.9×	666 1.0×	1.9k 3.6×	1.2k 3.2×	121	4.4k
José Bellver Spain	39	2.7k 1.3×	2.5k 1.6×	2.1k 3.0×	812 1.5×	823 2.2×	117	4.6k

Countries citing papers authored by Steven T. Nakajima

Since Specialization

Citations

This map shows the geographic impact of Steven T. Nakajima'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 Steven T. Nakajima with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Steven T. Nakajima more than expected).

Fields of papers citing papers by Steven T. Nakajima

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Steven T. Nakajima. 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 Steven T. Nakajima. The network helps show where Steven T. Nakajima may publish in the future.

Co-authorship network of co-authors of Steven T. Nakajima

This figure shows the co-authorship network connecting the top 25 collaborators of Steven T. Nakajima. A scholar is included among the top collaborators of Steven T. Nakajima 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 Steven T. Nakajima. Steven T. Nakajima 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

Archer, David F., et al.. (2013). Norethindrone Acetate 1.0 Milligram and Ethinyl Estradiol 10 Micrograms as an Ultra Low-Dose Oral Contraceptive. Obstetrics and Gynecology. 122(3). 601–607. 25 indexed citations

Krause, Miriam S., Henry Bohler, & Steven T. Nakajima. (2012). Saline Infusion Sonogram is Superior to CT Scan for Diagnosis of Osseous Metaplasia. Fertility and Sterility. 97(3). S21–S21. 1 indexed citations

Li, X., Jing Lin, Lin Li, et al.. (2010). Dysregulation of Leptin and Testosterone Production and Their Receptor Expression in the Human Placenta with Gestational Diabetes Mellitus. Placenta. 31(7). 581–588. 69 indexed citations

Nakajima, Steven T., et al.. (2009). Age and a single day-14 β-HCG can predict ongoing pregnancy following IVF. Reproductive BioMedicine Online. 19(1). 114–120. 24 indexed citations

Grossman, Michael, Steven T. Nakajima, Mary E. Fallat, & Yong Siow. (2007). Müllerian-inhibiting substance inhibits cytochrome P450 aromatase activity in human granulosa lutein cell culture. Fertility and Sterility. 89(5). 1364–1370. 151 indexed citations

Nakajima, Steven T., et al.. (2006). Matrix metalloproteinase-9 activity in the plasma of patients after surgical resection of endometriomas. Fertility and Sterility. 85(6). 1847–1848. 3 indexed citations

Nakajima, Steven T., David F. Archer, & Herman Ellman. (2006). Efficacy and safety of a new 24-day oral contraceptive regimen of norethindrone acetate 1 mg/ethinyl estradiol 20 μg (Loestrin® 24 Fe). Contraception. 75(1). 16–22. 61 indexed citations

Nakajima, Steven T., et al.. (2005). Plasma matrix metalloproteinase activity during the menstrual cycle of healthy ovulatory patients who underwent tubal ligation. Fertility and Sterility. 84(6). 1766–1767. 1 indexed citations

Nakajima, Steven T., et al.. (2004). Midluteal matrix metalloproteinase and tissue-inhibiting metalloproteinase plasma levels after embryo transfer. Fertility and Sterility. 82(4). 966–967. 1 indexed citations

10.

Li, Hongxia, Jiangang Chen, James W. Overstreet, Steven T. Nakajima, & Bill L. Lasley. (2002). Urinary follicle-stimulating hormone peak as a biomarker for estimating the day of ovulation. Fertility and Sterility. 77(5). 961–966. 25 indexed citations

11.

Nakajima, Steven T., et al.. (2002). Modulation of T‐Cell CD3‐Zeta Chain Expression in Early Pregnancy*. American Journal of Reproductive Immunology. 47(3). 167–173. 12 indexed citations

12.

Lin, Paul, et al.. (2002). Matrix metalloproteinase (MMP) 1, 2 and 9 activity levels in periovulatory follicular fluid from natural menstrual cycles and those stimulated with clomiphene citrate or recombinant follicle stimulating hormone. Fertility and Sterility. 78. S279–S279. 2 indexed citations

13.

Guzick, David S., Charlene Brazil, Steven T. Nakajima, et al.. (2001). Sperm Morphology, Motility, and Concentration in Fertile and Infertile Men. New England Journal of Medicine. 345(19). 1388–1393. 924 indexed citations breakdown →

14.

Gerçel-Taylor, Çiçek, et al.. (2000). Alterations in humoral immune responses associated with recurrent pregnancy loss. Fertility and Sterility. 73(2). 305–313. 46 indexed citations

15.

Guzick, David S., Sandra Ann Carson, Christos Coutifaris, et al.. (1999). Efficacy of Superovulation and Intrauterine Insemination in the Treatment of Infertility. Obstetrical & Gynecological Survey. 54(8). 517–518. 17 indexed citations

16.

Jolesz, F.A., William E. Lorensen, Steven T. Nakajima, et al.. (1997). Interactive virtual endoscopy.. American Journal of Roentgenology. 169(5). 1229–1235. 73 indexed citations

17.

Robertson, Kathryn, et al.. (1994). Semen preparation with the Sperm Select system versus a washing technique. Fertility and Sterility. 61(2). 269–275. 6 indexed citations

18.

Nakajima, Steven T., et al.. (1991). Progesterone production in early pregnancy. Fertility and Sterility. 55(3). 516–521. 18 indexed citations

19.

Nakajima, Steven T., et al.. (1991). Endometrial histology after first trimester spontaneous abortion. Fertility and Sterility. 55(1). 32–35. 2 indexed citations

20.

Gibson, Mark & Steven T. Nakajima. (1989). THE EFFECT OF A MEAL ON CIRCULATING STEADY-STATE PROGESTERONE LEVELS*. The Journal of Clinical Endocrinology & Metabolism. 69(4). 917–919. 17 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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