James Ja

468 total citations
16 papers, 337 citations indexed

About

James Ja is a scholar working on Rheumatology, Radiology, Nuclear Medicine and Imaging and Immunology. According to data from OpenAlex, James Ja has authored 16 papers receiving a total of 337 indexed citations (citations by other indexed papers that have themselves been cited), including 6 papers in Rheumatology, 6 papers in Radiology, Nuclear Medicine and Imaging and 3 papers in Immunology. Recurrent topics in James Ja's work include Systemic Lupus Erythematosus Research (6 papers), Monoclonal and Polyclonal Antibodies Research (5 papers) and T-cell and B-cell Immunology (2 papers). James Ja is often cited by papers focused on Systemic Lupus Erythematosus Research (6 papers), Monoclonal and Polyclonal Antibodies Research (5 papers) and T-cell and B-cell Immunology (2 papers). James Ja collaborates with scholars based in United States, Philippines and Norway. James Ja's co-authors include JT Merrill, Diane L. Kamen, Gillian M. Air, Evan S. Vista, Joel M. Guthridge, Read Ae, Jennifer A. Kelly, V. Michael Holers, MH Weisman and Irena Antonowicz and has published in prestigious journals such as Multiple Sclerosis Journal, Lupus and Journal of Investigative Medicine.

In The Last Decade

James Ja

15 papers receiving 316 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
James Ja United States	10	226	149	82	52	31	16	337
K. Wildhagen Germany	9	215 1.0×	70 0.5×	57 0.7×	65 1.3×	39 1.3×	20	369
Alessandra Melegari Italy	9	150 0.7×	123 0.8×	95 1.2×	56 1.1×	43 1.4×	18	328
R G Lahita United States	5	167 0.7×	139 0.9×	33 0.4×	10 0.2×	27 0.9×	7	320
M. Frigui Tunisia	12	202 0.9×	76 0.5×	41 0.5×	48 0.9×	47 1.5×	41	349
Guillermo Berbotto Argentina	5	210 0.9×	88 0.6×	45 0.5×	28 0.5×	16 0.5×	10	252
P Lavilla Spain	6	225 1.0×	82 0.6×	42 0.5×	41 0.8×	35 1.1×	19	298
Shunsuke Hirose Japan	12	133 0.6×	142 1.0×	40 0.5×	17 0.3×	45 1.5×	19	383
G Mintz Mexico	7	214 0.9×	94 0.6×	15 0.2×	63 1.2×	46 1.5×	15	300
B. Kroegler Italy	10	216 1.0×	179 1.2×	36 0.4×	39 0.8×	40 1.3×	24	383
G. Tokgöz Türkiye	10	179 0.8×	51 0.3×	33 0.4×	33 0.6×	26 0.8×	24	345

Countries citing papers authored by James Ja

Since Specialization

Citations

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

Fields of papers citing papers by James Ja

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of James Ja

This figure shows the co-authorship network connecting the top 25 collaborators of James Ja. A scholar is included among the top collaborators of James Ja 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 James Ja. James Ja is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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16 of 16 papers shown

Vista, Evan S., et al.. (2012). Influenza vaccination can induce new-onset anticardiolipins but not β2-glycoprotein-I antibodies among patients with systemic lupus erythematosus. Lupus. 21(2). 168–174. 28 indexed citations

Ja, James, et al.. (2011). The United States to Africa lupus prevalence gradient revisited. Lupus. 20(10). 1095–1103. 39 indexed citations

Mechelli, Rosella, Daniela Vittori, Giulia Coarelli, et al.. (2011). Epstein–Barr virus nuclear antigen-1 B-cell epitopes in multiple sclerosis twins. Multiple Sclerosis Journal. 17(11). 1290–1294. 24 indexed citations

Hamijoyo, Laniyati, et al.. (2010). Studies of Filipino patients with systemic lupus erythematosus: Autoantibody profile of first-degree relatives. Lupus. 20(5). 537–543. 18 indexed citations

Kelly, Jennifer A., et al.. (2008). Patients with familial and sporadic onset SLE have similar clinical profiles but vary profoundly by race. Lupus. 17(11). 1004–1009. 18 indexed citations

Ja, James, et al.. (2007). Hydroxychloroquine sulfate treatment is associated with later onset of systemic lupus erythematosus. Lupus. 16(6). 401–409. 132 indexed citations

Zhang, Pan, et al.. (1995). Immunization with vesicular stomatitis virus nucleocapsid protein induces autoantibodies to the 60 kD Ro ribonucleoprotein particle.. Journal of Investigative Medicine. 43(2). 151–8. 14 indexed citations

Ja, James, et al.. (1995). Peptide autoantigenicity of the small nuclear ribonucleoprotein C.. PubMed. 13(3). 299–305. 22 indexed citations

Ja, James, et al.. (1989). Vaginitis in reproductive-age women.. PubMed. 1(1). 35–41.

10.

Ja, James, et al.. (1975). Major determinants of drug disposition in chronic liver disease: a study with indocyanine green and antipyrine [proceedings].. PubMed. 2(4). 370P–371P. 5 indexed citations

11.

Ja, James, et al.. (1974). Proceedings: Experimental production of lipoprotein X (LPX) in the absence of obstructive jaundice.. PubMed. 15(4). 343–343. 3 indexed citations

12.

Ja, James. (1969). Therapeutic aspects of ultrasound.. PubMed. 42(493). 72–72. 4 indexed citations

13.

Ja, James. (1968). Acute renal failure due to a bismuth preparation.. PubMed. 109(4). 317–9. 7 indexed citations

14.

Ja, James. (1963). NEW DEVELOPMENTS IN THE ULTRASONIC THERAPY OF MENIERE'S DISEASE.. PubMed. 33. 226–44. 13 indexed citations

15.

Metcoff, Jack, et al.. (1955). Renal electrolyte transport in normal and nephrotic children; effects of simultaneous infusion of carbonic anhydrase inhibitor and nonreabsorbable anion.. PubMed. 46(3). 333–41. 9 indexed citations

16.

Ja, James. (1951). Management of endometrial carcinoma.. PubMed. 42(11). 327–9. 1 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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