S. Isojima

2.0k total citations · 1 hit paper
88 papers, 1.6k citations indexed

About

S. Isojima is a scholar working on Reproductive Medicine, Molecular Biology and Genetics. According to data from OpenAlex, S. Isojima has authored 88 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 40 papers in Reproductive Medicine, 29 papers in Molecular Biology and 22 papers in Genetics. Recurrent topics in S. Isojima's work include Sperm and Testicular Function (37 papers), Animal Genetics and Reproduction (18 papers) and Xenotransplantation and immune response (17 papers). S. Isojima is often cited by papers focused on Sperm and Testicular Function (37 papers), Animal Genetics and Reproduction (18 papers) and Xenotransplantation and immune response (17 papers). S. Isojima collaborates with scholars based in Japan and United States. S. Isojima's co-authors include Koji Koyama, Minoru Shigeta, Yoshiyuki Tsuji, Akiko Hasegawa, Hiroaki Shibahara, Nancy J. Alexander, Lani J. Burkman, A. Hasegawa, Yasushi Tsuji and M. Inoue and has published in prestigious journals such as Science, The Journal of Experimental Medicine and The Journal of Clinical Endocrinology & Metabolism.

In The Last Decade

S. Isojima

84 papers receiving 1.5k 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.

Immunologic analysis of sperm-immobilizing factor found in sera of women with unexplained sterility

1968 327 citations S. Isojima et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
S. Isojima Japan	21	982	516	448	406	308	88	1.6k
Rajesh K. Naz United States	19	740 0.8×	475 0.9×	241 0.5×	311 0.8×	193 0.6×	32	1.1k
Steen Laursen Denmark	13	415 0.4×	415 0.8×	228 0.5×	780 1.9×	43 0.1×	19	1.4k
Dan Geraghty United States	13	236 0.2×	273 0.5×	185 0.4×	948 2.3×	69 0.2×	18	1.2k
Marek Kirszenbaum France	18	358 0.4×	445 0.9×	207 0.5×	1.0k 2.5×	213 0.7×	34	1.4k
Edmundo Lamoyi Mexico	21	61 0.1×	100 0.2×	626 1.4×	632 1.6×	86 0.3×	55	1.5k
José Manuel Martín‐Villa Spain	24	63 0.1×	87 0.2×	244 0.5×	1.1k 2.8×	306 1.0×	121	1.6k
Jianhong Zhang Canada	27	447 0.5×	447 0.9×	203 0.5×	1.7k 4.2×	51 0.2×	48	2.3k
Shira Natanson‐Yaron Israel	15	464 0.5×	677 1.3×	260 0.6×	1.4k 3.6×	43 0.1×	16	2.2k
Laura Bolling United States	7	169 0.2×	147 0.3×	211 0.5×	83 0.2×	112 0.4×	7	646

Countries citing papers authored by S. Isojima

Since Specialization

Citations

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

Fields of papers citing papers by S. Isojima

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of S. Isojima

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

Tsuji, Yoshiyuki, et al.. (1995). Progesterone Treatment Decreases Sulfate Carbohydrate Antigen on Endometrial Carcinoma Cells and Inhibits the Cell Binding to Laminin. Gynecologic Oncology. 57(3). 313–320. 2 indexed citations

Hasegawa, A., et al.. (1995). Analysis of an epitope sequence recognized by a monoclonal antibody MAb-5H4 against a porcine zona pellucida glycoprotein (pZP4) that blocks fertilization. Reproduction. 105(2). 295–302. 16 indexed citations

Fukuda, Hiroshi, et al.. (1994). The Effects of Patients' Sera with Sperm‐Immobilizing Antibodies on Sperm of the Japanese Monkey. Asia-Oceania Journal of Obstetrics and Gynaecology. 20(4). 433–439. 2 indexed citations

Komori, Shinji, et al.. (1994). Identification and characterization of a 27 kDa acrosome protein of human sperm defined by a monoclonal antibody with fertilization-blocking effect. Journal of Reproductive Immunology. 26(2). 97–110. 4 indexed citations

Hasegawa, A., M. Inoue, Koji Koyama, & S. Isojima. (1993). DETERMINATION OF A EPITOPE SEQUENCE RECOGNIZED BY A MONOCLONAL ANTIBODY (5H4) TO PORCINE ZONA PELLUCIDA. 7. 125–128.

Shibahara, Hiroaki, Lani J. Burkman, S. Isojima, & Nancy J. Alexander. (1993). Effects of sperm-immobilizing antibodies on sperm-zona pellucida tight binding. Fertility and Sterility. 60(3). 533–539. 40 indexed citations

Sawai, Hideaki, et al.. (1993). Stable Production of Recombinant Human Sperm Immobilizing Antibody Using cDNA Expression Vectors. American Journal of Reproductive Immunology. 29(2). 100–108. 2 indexed citations

Shigeta, Minoru, Kazuko Sakata, & S. Isojima. (1992). MONOCLONAL ANTI-IDIOTYPIC ANTIBODY AGAINST HUMAN MONOCLONAL SPERM IMMOBILIZATION ANTIBODY H6-3C4.. 6. 52–55. 1 indexed citations

Isojima, S.. (1992). RECENT STUDIES OF SPERM IMMOBILIZING ANTIBODIES IN THE SERA OF STERILE WOMEN WITH UNKNOWN CAUSE. 6. 9–17. 1 indexed citations

10.

Koyama, Koji, Akiko Hasegawa, M. Inoue, & S. Isojima. (1991). Blocking of Human Sperm-Zona Interaction by Monoclonal Antibodies to a Glycoprotein Family (ZP4) of Porcine Zona Pellucida1. Biology of Reproduction. 45(5). 727–735. 41 indexed citations

11.

Kakishita, Eizo, et al.. (1990). Efficacy of the high molecular weight fraction of plasma for the maintenance of pregnancy associated with thrombotic thrombocytopenic purpura. American Journal of Hematology. 35(3). 179–183. 9 indexed citations

12.

Tsuji, Yoshiyuki, et al.. (1989). Anti-Sperm Monoclonal Antibodies Established by Human Trophoblast immunization. 4. 30–33. 2 indexed citations

13.

Hasegawa, A., et al.. (1988). IMMUNOLOGICAL AND BIOLOGICAL CHARACTERIZATION OF POLYCLONAL AND MONOCLONAL ANTIBODIES TO A GLYCOPROTEIN FAMILY (ZP4) OF PORCINE ZONA PELLUCIDA. 3. 122–127.

14.

Tsuji, Yasushi, Henrik Clausen, Edward Nudelman, et al.. (1988). Human sperm carbohydrate antigens defined by an antisperm human monoclonal antibody derived from an infertile woman bearing antisperm antibodies in her serum.. The Journal of Experimental Medicine. 168(1). 343–356. 75 indexed citations

15.

Hasegawa, Akiko, Koji Koyama, & S. Isojima. (1988). Immunogenicity of a 92kDa component of porcine zona pellucida isolated using a monoclonal antibody (3A4-2G1) exclusively cross-reactive with porcine and human zonae pellucidae. Journal of Reproductive Immunology. 14(1). 73–82. 9 indexed citations

16.

Isojima, S.. (1988). Recent Advances in Defining Human Seminal Plasma Antigens Using Monoclonal Antibodies. American Journal Of Reproductive Immunology. 17(4). 150–155. 6 indexed citations

17.

Nakagawa, Shoko, et al.. (1987). Establishment of a murine monoclonal antibody against human clear cell carcinoma and analysis of the corresponding antigen. Gynecologic Oncology. 28(3). 318–329. 1 indexed citations

18.

Hasegawa, A., et al.. (1985). 17. Blocking Effect of Antiserum Raised to Purified Porcine Zona Pellucida Antigen on Sperm Binding to Oocytes in Human. 日本産科婦人科學會雜誌. 37(11). 2639–2640. 1 indexed citations

19.

Isojima, S., et al.. (1968). Stepwise Appearance of Sperm-Specific Antigens in Rats and Their Disappearance after Fertilization. Fertility and Sterility. 19(6). 999–1008. 10 indexed citations

20.

Isojima, S., et al.. (1964). Mechanism of Experimental Sterility Induced in Guinea Pigs by Injection of Homologous Testis and Sperm. Fertility and Sterility. 15(2). 206–212. 8 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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