Ilkka Julkunen

20.3k total citations · 2 hit papers
232 papers, 16.0k citations indexed

About

Ilkka Julkunen is a scholar working on Immunology, Epidemiology and Infectious Diseases. According to data from OpenAlex, Ilkka Julkunen has authored 232 papers receiving a total of 16.0k indexed citations (citations by other indexed papers that have themselves been cited), including 125 papers in Immunology, 75 papers in Epidemiology and 59 papers in Infectious Diseases. Recurrent topics in Ilkka Julkunen's work include interferon and immune responses (70 papers), Immune Response and Inflammation (51 papers) and Respiratory viral infections research (44 papers). Ilkka Julkunen is often cited by papers focused on interferon and immune responses (70 papers), Immune Response and Inflammation (51 papers) and Respiratory viral infections research (44 papers). Ilkka Julkunen collaborates with scholars based in Finland, United States and Italy. Ilkka Julkunen's co-authors include Sampsa Matikainen, Timo Sareneva, Jaana Pirhonen, Krister Melén, Minja Miettinen, Jukka Sirén, Anne Lehtonen, Masashi Kurimoto, Ville Veckman and Mari Strengell and has published in prestigious journals such as Proceedings of the National Academy of Sciences, The Lancet and Nucleic Acids Research.

In The Last Decade

Ilkka Julkunen

227 papers receiving 15.5k citations

Hit Papers

align trajectories sort by overperformance

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.

Maturation, Activation, and Protection of Dendritic Cells Induced by Double-stranded RNA

1999 609 citations Ilkka Julkunen et al. profile →
Distinct patterns and kinetics of chemokine production regulate dendritic cell function

1999 559 citations Minja Miettinen, Sampsa Matikainen et al. profile →

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author						Papers	Cites
Ilkka Julkunen	9.1k	4.6k	4.1k	2.6k	2.2k	232	16.0k
Manfred Köpf	14.6k 1.6×	3.7k 0.8×	5.6k 1.3×	2.3k 0.9×	3.4k 1.5×	234	25.3k
Peter Staeheli	10.3k 1.1×	6.8k 1.5×	5.7k 1.4×	4.3k 1.7×	2.4k 1.1×	254	20.4k
Alexander Khoruts	5.2k 0.6×	3.8k 0.8×	6.8k 1.6×	6.5k 2.5×	1.4k 0.6×	179	16.6k
Stefanie N. Vogel	15.6k 1.7×	4.5k 1.0×	7.0k 1.7×	2.3k 0.9×	2.5k 1.1×	328	24.6k
Kevin W. Moore	11.4k 1.3×	3.2k 0.7×	3.7k 0.9×	1.2k 0.5×	3.8k 1.7×	98	20.0k
Seppo Meri	9.0k 1.0×	2.6k 0.6×	3.0k 0.7×	2.0k 0.8×	884 0.4×	389	17.4k
Frits Koning	7.0k 0.8×	4.6k 1.0×	2.7k 0.7×	832 0.3×	1.3k 0.6×	310	16.4k
Kenya Honda	14.8k 1.6×	4.1k 0.9×	13.6k 3.3×	5.1k 2.0×	3.7k 1.7×	129	29.9k
Marina A. Freudenberg	12.9k 1.4×	3.7k 0.8×	5.1k 1.2×	1.5k 0.6×	1.8k 0.8×	170	20.9k
Lena Alexopoulou	13.2k 1.5×	3.7k 0.8×	3.8k 0.9×	2.0k 0.8×	1.5k 0.7×	76	18.0k

Countries citing papers authored by Ilkka Julkunen

Since Specialization

Citations

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

Fields of papers citing papers by Ilkka Julkunen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ilkka Julkunen

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

Nissilä, Eija, Pinja Jalkanen, Katarzyna Leskinen, et al.. (2025). The COVID‐19 vaccine ChAdOx1 is opsonized by anti‐vector antibodies that activate complement and promote viral vector phagocytosis. Scandinavian Journal of Immunology. 101(2). e70000–e70000.

Reinholm, Arttu, Hira Khan, T.I. Laakso, et al.. (2025). Long-term neutralization capacity of vaccine and breakthrough infection induced SARS-CoV-2 specific antibodies against omicron subvariants BA.2, XBB.1.5, and JN.1. Vaccine. 68. 127894–127894.

Ekström, Nina, Camilla Virta, Pamela Österlund, et al.. (2022). Strong Neutralizing Antibody Responses to SARS-CoV-2 Variants Following a Single Vaccine Dose in Subjects With Previous SARS-CoV-2 Infection. Open Forum Infectious Diseases. 9(12). ofac625–ofac625. 4 indexed citations

Volkmuth, Wayne, José S. Duca, Michele Pallaoro, et al.. (2015). Antibodies to influenza nucleoprotein cross-react with human hypocretin receptor 2. WOS. 1 indexed citations

Huovinen, Elisa, Mikko Virtanen, Salla Toikkanen, et al.. (2014). Hepatiitti C -virusinfektioiden seuranta Suomessa vuosina 1995-2013. STM:n Hallinnonalan avoin julkaisuarkisto (Julkari). 139(5). 603–603. 1 indexed citations

Ikonen, Niina, Mari Strengell, Leena Kinnunen, et al.. (2010). High frequency of cross-reacting antibodies against 2009 pandemic influenza A(H1N1) virus among the elderly in Finland. STM:n Hallinnonalan avoin julkaisuarkisto (Julkari). 27 indexed citations

Mäkelä, Sanna, Mari Strengell, Taija E. Pietilä, Pamela Österlund, & Ilkka Julkunen. (2009). Multiple signaling pathways contribute to synergistic TLR ligand-dependent cytokine gene expression in human monocyte-derived macrophages and dendritic cells. Journal of Leukocyte Biology. 85(4). 664–672. 130 indexed citations

Miettinen, Minja, et al.. (2008). Probiotic Leuconostoc mesenteroides ssp. cremoris and Streptococcus thermophilus induce IL-12 and IFN-γ production. World Journal of Gastroenterology. 14(8). 1192–1192. 92 indexed citations

Latvala, Sinikka, Taija E. Pietilä, Ville Veckman, et al.. (2008). Potentially probiotic bacteria induce efficient maturation but differential cytokine production in human monocyte-derived dendritic cells. World Journal of Gastroenterology. 14(36). 5570–5570. 57 indexed citations

10.

Sirén, Jukka, et al.. (2005). IFN-α Enhances TLR3-Mediated Antiviral Cytokine Expression in Human Endothelial and Epithelial Cells by Up-Regulating TLR3 Expression. The Journal of Immunology. 174(7). 4289–4294. 161 indexed citations

11.

Strengell, Mari, Sampsa Matikainen, Jukka Sirén, et al.. (2003). IL-21 in Synergy with IL-15 or IL-18 Enhances IFN-γ Production in Human NK and T Cells. The Journal of Immunology. 170(11). 5464–5469. 332 indexed citations

12.

Lande, Roberto, Elena Giacomini, Tiziana Grassi, et al.. (2003). IFN-αβ Released by Mycobacterium tuberculosis -Infected Human Dendritic Cells Induces the Expression of CXCL10: Selective Recruitment of NK and Activated T Cells. The Journal of Immunology. 170(3). 1174–1182. 122 indexed citations

13.

Strengell, Mari, Timo Sareneva, Don Foster, Ilkka Julkunen, & Sampsa Matikainen. (2002). IL-21 Up-Regulates the Expression of Genes Associated with Innate Immunity and Th1 Response. The Journal of Immunology. 169(7). 3600–3605. 214 indexed citations

14.

Pirhonen, Jaana, Sampsa Matikainen, & Ilkka Julkunen. (2002). Regulation of Virus-Induced IL-12 and IL-23 Expression in Human Macrophages. The Journal of Immunology. 169(10). 5673–5678. 113 indexed citations

15.

Sareneva, Timo, Ilkka Julkunen, & Sampsa Matikainen. (2000). IFN-α and IL-12 Induce IL-18 Receptor Gene Expression in Human NK and T Cells. The Journal of Immunology. 165(4). 1933–1938. 142 indexed citations

16.

Pitkäranta, Anne, Juha‐Pekka Vasama, & Ilkka Julkunen. (1999). Sudden Deafness and Viral Infections. Oto-Rhino-Laryngologia Nova. 9(5). 190–197. 8 indexed citations

17.

Sareneva, Timo, Kari Cantell, L. Pyhälä, Jaana Pirhonen, & Ilkka Julkunen. (1993). Effect of Carbohydrates on the Pharmacokinetics of Human Interferon-γ. Journal of Interferon Research. 13(4). 267–269. 42 indexed citations

18.

Cantell, Kari, Sinikka Hirvonen, Timo Sareneva, Jaana Pirhonen, & Ilkka Julkunen. (1992). Differential Inactivation of Interferons by a Protease from Human Granulocytes. Journal of Interferon Research. 12(3). 177–183. 13 indexed citations

19.

Karhunen, Tuula, Carola Tilgmann, Ilkka Julkunen, Ismo Ulmanen, & Pertti Panula. (1992). Expression of catechol-O-methyltransferase (COMT) in rat brain and peripheral tissues. Lund University Publications (Lund University). 18. 1385–1385. 1 indexed citations

20.

Puolakkainen, Mirja, Airi Palva, Ilkka Julkunen, Marjut Ranki, & Pekka Saikku. (1988). Comparison of culture, enzyme immunoassay and nucleic acid sandwich hybridization in detecting Chlamydia trachomatis in genital tract infections. FEMS Microbiology Letters. 55(3). 353–359. 3 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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