Ragnberth Helleday

2.1k total citations
29 papers, 1.6k citations indexed

About

Ragnberth Helleday is a scholar working on Health, Toxicology and Mutagenesis, Pulmonary and Respiratory Medicine and Speech and Hearing. According to data from OpenAlex, Ragnberth Helleday has authored 29 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 20 papers in Health, Toxicology and Mutagenesis, 10 papers in Pulmonary and Respiratory Medicine and 7 papers in Speech and Hearing. Recurrent topics in Ragnberth Helleday's work include Air Quality and Health Impacts (20 papers), Chronic Obstructive Pulmonary Disease (COPD) Research (8 papers) and Asthma and respiratory diseases (7 papers). Ragnberth Helleday is often cited by papers focused on Air Quality and Health Impacts (20 papers), Chronic Obstructive Pulmonary Disease (COPD) Research (8 papers) and Asthma and respiratory diseases (7 papers). Ragnberth Helleday collaborates with scholars based in Sweden, United Kingdom and Belgium. Ragnberth Helleday's co-authors include Anders Blomberg, Thomas Sandström, Anthony J. Frew, Ian Mudway, Frank J. Kelly, Nikolai Stenfors, Susan J. Wilson, N Stjernberg, Stephen T. Holgate and Jamshid Pourazar and has published in prestigious journals such as PLoS ONE, American Journal of Respiratory and Critical Care Medicine and Free Radical Biology and Medicine.

In The Last Decade

Ragnberth Helleday

27 papers receiving 1.5k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ragnberth Helleday Sweden 21 1.2k 351 317 315 216 29 1.6k
Nikolai Stenfors Sweden 17 1.2k 0.9× 347 1.0× 363 1.1× 378 1.2× 281 1.3× 50 1.8k
G. G. Krishna Murthy United States 21 1.5k 1.2× 284 0.8× 214 0.7× 415 1.3× 131 0.6× 33 2.0k
Bertil Rudell Sweden 10 1.3k 1.0× 393 1.1× 216 0.7× 392 1.2× 109 0.5× 23 1.5k
Jacqueline D. Carter United States 25 1.1k 0.9× 295 0.8× 352 1.1× 210 0.7× 189 0.9× 34 1.9k
Robert W. Clarke United States 23 974 0.8× 169 0.5× 334 1.1× 281 0.9× 89 0.4× 57 1.7k
Carol A. Trenga United States 16 960 0.8× 238 0.7× 185 0.6× 358 1.1× 163 0.8× 21 1.3k
Jamshid Pourazar Sweden 29 1.7k 1.4× 521 1.5× 486 1.5× 451 1.4× 354 1.6× 67 2.6k
Bruce Urch Canada 24 2.4k 2.0× 420 1.2× 174 0.5× 715 2.3× 158 0.7× 42 2.8k
Annelie Behndig Sweden 22 685 0.6× 236 0.7× 316 1.0× 177 0.6× 206 1.0× 54 1.5k
Weimin Song China 25 1.7k 1.4× 295 0.8× 130 0.4× 486 1.5× 157 0.7× 67 2.1k

Countries citing papers authored by Ragnberth Helleday

Since Specialization
Citations

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

Fields of papers citing papers by Ragnberth Helleday

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ragnberth Helleday

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

All Works

20 of 20 papers shown
1.
Sandlund, Marlene, et al.. (2025). Transition design: Co-creating system solutions for chronic obstructive pulmonary disease (COPD) care. Design Studies. 98. 101297–101297. 3 indexed citations
2.
3.
Pourazar, Jamshid, Annelie Behndig, Ragnberth Helleday, et al.. (2015). Airway Inflammatory Response In Healthy Subjects Following Chamber Exposure To 100% Rme Biodiesel. American Journal of Respiratory and Critical Care Medicine. 191.
4.
Bosson, Jenny A., Anders Blomberg, Nikolai Stenfors, et al.. (2013). Peripheral Blood Neutrophilia as a Biomarker of Ozone-Induced Pulmonary Inflammation. PLoS ONE. 8(12). e81816–e81816. 11 indexed citations
5.
Behndig, Annelie, Joanna Brown, Nikolai Stenfors, et al.. (2010). Proinflammatory doses of diesel exhaust in healthy subjects fail to elicit equivalent or augmented airway inflammation in subjects with asthma. Thorax. 66(1). 12–19. 63 indexed citations
6.
Behndig, Annelie, Anders Blomberg, Ragnberth Helleday, et al.. (2009). Antioxidant responses to acute ozone challenge in the healthy human airway. Inhalation Toxicology. 21(11). 933–942. 30 indexed citations
7.
Behndig, Annelie, Anders Blomberg, Ragnberth Helleday, Frank J. Kelly, & Ian Mudway. (2008). Augmentation of Respiratory Tract Lining Fluid Ascorbate Concentrations Through Supplementation with Vitamin C. Inhalation Toxicology. 21(3). 250–258. 11 indexed citations
8.
Behndig, Annelie, Ian Mudway, Joanna Brown, et al.. (2006). Airway antioxidant and inflammatory responses to diesel exhaust exposure in healthy humans. European Respiratory Journal. 27(2). 359–365. 203 indexed citations
9.
Helleday, Ragnberth, Bertil Forsberg, Ian Mudway, et al.. (2006). Exploring the Time Dependence of Serum Clara Cell Protein as a Biomarker of Pulmonary Injury in Humans. CHEST Journal. 130(3). 672–675. 45 indexed citations
10.
Mudway, Ian, Annelie Behndig, Ragnberth Helleday, et al.. (2005). Vitamin supplementation does not protect against symptoms in ozone-responsive subjects. Free Radical Biology and Medicine. 40(10). 1702–1712. 38 indexed citations
11.
Pourazar, Jamshid, Anthony J. Frew, Anders Blomberg, et al.. (2004). Diesel exhaust exposure enhances the expression of IL-13 in the bronchial epithelium of healthy subjects. Respiratory Medicine. 98(9). 821–825. 71 indexed citations
12.
Bosson, Jenny A., Nikolai Stenfors, Anders Bucht, et al.. (2003). Ozone‐induced bronchial epithelial cytokine expression differs between healthy and asthmatic subjects. Clinical & Experimental Allergy. 33(6). 777–782. 58 indexed citations
13.
Blomberg, Anders, Ian Mudway, Michael Svensson, et al.. (2003). Clara cell protein as a biomarker for ozone-induced lung injury in humans. European Respiratory Journal. 22(6). 883–888. 80 indexed citations
14.
Pathmanathan, Siva Gowri, Mamidipudi Thirumala Krishna, Anders Blomberg, et al.. (2003). Repeated daily exposure to 2 ppm nitrogen dioxide upregulates the expression of IL-5, IL-10, IL-13, and ICAM-1 in the bronchial epithelium of healthy human airways. Occupational and Environmental Medicine. 60(11). 892–896. 56 indexed citations
15.
Mudway, Ian, Nikolai Stenfors, Anders Blomberg, et al.. (2001). Differences in basal airway antioxidant concentrations are not predictive of individual responsiveness to ozone: a comparison of healthy and mild asthmatic subjects. Free Radical Biology and Medicine. 31(8). 962–974. 65 indexed citations
16.
Blomberg, Anders, Mamidipudi Thirumala Krishna, Ragnberth Helleday, et al.. (1999). Persistent Airway Inflammation but Accommodated Antioxidant and Lung Function Responses after Repeated Daily Exposure to Nitrogen Dioxide. American Journal of Respiratory and Critical Care Medicine. 159(2). 536–543. 96 indexed citations
17.
Rudell, Bertil, Anders Blomberg, Ragnberth Helleday, et al.. (1999). Bronchoalveolar inflammation after exposure to diesel exhaust: comparison between unfiltered and particle trap filtered exhaust.. Occupational and Environmental Medicine. 56(8). 527–534. 144 indexed citations
18.
Helleday, Ragnberth, et al.. (1995). Nitrogen dioxide exposure impairs the frequency of the mucociliary activity in healthy subjects. European Respiratory Journal. 8(10). 1664–1668. 36 indexed citations
19.
Helleday, Ragnberth, Thomas Sandström, & N Stjernberg. (1994). Differences in bronchoalveolar cell response to nitrogen dioxide exposure between smokers and nonsmokers. European Respiratory Journal. 7(7). 1213–1220. 29 indexed citations
20.
Sandström, Thomas, et al.. (1992). Reductions in lymphocyte subpopulations after repeated exposure to 1.5 ppm nitrogen dioxide.. Occupational and Environmental Medicine. 49(12). 850–854. 30 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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