A-K Ulfgren

1.1k total citations
12 papers, 813 citations indexed

About

A-K Ulfgren is a scholar working on Epidemiology, Rheumatology and Immunology. According to data from OpenAlex, A-K Ulfgren has authored 12 papers receiving a total of 813 indexed citations (citations by other indexed papers that have themselves been cited), including 3 papers in Epidemiology, 3 papers in Rheumatology and 3 papers in Immunology. Recurrent topics in A-K Ulfgren's work include Rheumatoid Arthritis Research and Therapies (3 papers), Inflammatory Myopathies and Dermatomyositis (2 papers) and Inflammation biomarkers and pathways (1 paper). A-K Ulfgren is often cited by papers focused on Rheumatoid Arthritis Research and Therapies (3 papers), Inflammatory Myopathies and Dermatomyositis (2 papers) and Inflammation biomarkers and pathways (1 paper). A-K Ulfgren collaborates with scholars based in Sweden, United States and Netherlands. A-K Ulfgren's co-authors include Dimitrios Makrygiannakis, Lars Klareskog, Anca I. Catrina, Anders Eklúnd, Johan Grünewald, Monika Hermansson, Albert J.W. Zendman, Anthony P. Nicholas, C. Magnus Sköld and Erik af Klint and has published in prestigious journals such as Annals of the Rheumatic Diseases, British Journal of Dermatology and Nitric Oxide.

In The Last Decade

A-K Ulfgren

11 papers receiving 796 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
A-K Ulfgren Sweden	7	422	249	167	141	110	12	813
Tom W.L. Groeneveld Netherlands	10	253 0.6×	416 1.7×	61 0.4×	96 0.7×	83 0.8×	13	768
Sung‐Chao Chu Taiwan	11	287 0.7×	131 0.5×	91 0.5×	113 0.8×	86 0.8×	37	948
Heikki Isomäki Finland	9	572 1.4×	193 0.8×	58 0.3×	89 0.6×	121 1.1×	15	1.1k
A Corvetta Italy	15	274 0.6×	195 0.8×	71 0.4×	59 0.4×	107 1.0×	36	763
Benjamin A. Fisher United Kingdom	11	858 2.0×	274 1.1×	71 0.4×	339 2.4×	193 1.8×	17	1.3k
Mark H. Wenink Netherlands	16	308 0.7×	611 2.5×	51 0.3×	84 0.6×	173 1.6×	41	958
K. Ayed Tunisia	19	415 1.0×	426 1.7×	90 0.5×	78 0.6×	256 2.3×	91	1.3k
Nikolaus Freudenberg Germany	15	60 0.1×	214 0.9×	177 1.1×	91 0.6×	137 1.2×	30	754
Yoshio Ozaki Japan	16	191 0.5×	585 2.3×	76 0.5×	26 0.2×	185 1.7×	43	1.0k
J.A. Schifferli Switzerland	12	215 0.5×	465 1.9×	44 0.3×	103 0.7×	137 1.2×	30	746

Countries citing papers authored by A-K Ulfgren

Since Specialization

Citations

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

Fields of papers citing papers by A-K Ulfgren

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by A-K Ulfgren. 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 A-K Ulfgren. The network helps show where A-K Ulfgren may publish in the future.

Co-authorship network of co-authors of A-K Ulfgren

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

All Works

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12 of 12 papers shown

Makrygiannakis, Dimitrios, Monika Hermansson, A-K Ulfgren, et al.. (2008). Smoking increases peptidylarginine deiminase 2 enzyme expression in human lungs and increases citrullination in BAL cells. Annals of the Rheumatic Diseases. 67(10). 1488–1492. 406 indexed citations

Makrygiannakis, Dimitrios, Liselotte Bäckdahl, Leonid Padyukov, et al.. (2008). Cellular distribution of the C-type II lectin dendritic cell immunoreceptor (DCIR) and its expression in the rheumatic joint: identification of a subpopulation of DCIR+ T cells. Annals of the Rheumatic Diseases. 67(12). 1742–1749. 30 indexed citations

Makrygiannakis, Dimitrios, Erik af Klint, Ingrid E. Lundberg, et al.. (2006). Citrullination is an inflammation-dependent process. Annals of the Rheumatic Diseases. 65(9). 1219–1222. 232 indexed citations

Wittkowski, Helmut, A-K Ulfgren, Leen De Rycke, et al.. (2005). S100A12-expression is upregulated by TNF and may serve as a marker for the success of anti-TNF therapy. Ghent University Academic Bibliography (Ghent University). 1 indexed citations

Lundberg, Ingrid E., et al.. (2005). Expression of IL-18 in muscle tissue of patients with treatment-resistant idiopathic inflammatory myopathies. Arthritis Research. 7(Suppl 1). P57–P57. 6 indexed citations

Ulfgren, A-K, et al.. (2004). Nitric oxide formation in the oropharyngeal tract: possible influence of cigarette smoking. Nitric Oxide. 11(3). 247–255. 14 indexed citations

Andersson, Thomas, Erik af Klint, Jan Andersson, et al.. (2004). Differential gene expression and protein expression levels of MMP and TIMP molecules in response to glucocorticoid treatment in arthritic patients. Arthritis Research. 6(Suppl 1). 53–53.

Korotkova, Marina, et al.. (2004). Effects of anti-rheumatic treatments on expression of microsomal prostaglandin E synthase-1 in rheumatoid arthritis synovium. Arthritis Research. 6(Suppl 1). 98–98. 2 indexed citations

Ernestam, Sofia, et al.. (2004). Anti-tumour necrosis factor therapy modulates the OPG/OPGL system in rheumatoid arthritis synovium. Arthritis Research. 6(Suppl 1). 24–24. 1 indexed citations

10.

Marchini, Giovanna, S. W. Lindow, Hjalmar Brismar, et al.. (2002). The newborn infant is protected by an innate antimicrobial barrier: peptide antibiotics are present in the skin and vernix caseosa. British Journal of Dermatology. 147(6). 1127–1134. 112 indexed citations

11.

Harris, Helena Erlandsson, et al.. (2002). HMGB1 is a potent proinflammatory mediator expressed abundantly in chronic synovitis. Arthritis Research. 4(Suppl 1). 39–39. 8 indexed citations

12.

Ulfgren, A-K, et al.. (2002). Low levels of apoptosis and high FLIP expression in early rheumatoid arthritis synovium. Arthritis Research. 4(Suppl 1). 4–4. 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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