Chris O’Callaghan

1.9k total citations
38 papers, 1.1k citations indexed

About

Chris O’Callaghan is a scholar working on Pulmonary and Respiratory Medicine, Genetics and Epidemiology. According to data from OpenAlex, Chris O’Callaghan has authored 38 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 24 papers in Pulmonary and Respiratory Medicine, 8 papers in Genetics and 6 papers in Epidemiology. Recurrent topics in Chris O’Callaghan's work include Cystic Fibrosis Research Advances (15 papers), Inhalation and Respiratory Drug Delivery (8 papers) and Tracheal and airway disorders (6 papers). Chris O’Callaghan is often cited by papers focused on Cystic Fibrosis Research Advances (15 papers), Inhalation and Respiratory Drug Delivery (8 papers) and Tracheal and airway disorders (6 papers). Chris O’Callaghan collaborates with scholars based in United Kingdom, United States and Switzerland. Chris O’Callaghan's co-authors include Robert A. Hirst, Andrew Rutman, Peter W. Barry, Mark Chilvers, Claire M. Smith, Adrian S. Woolf, Suzanna L. Prosser, Andrew M. Fry, Gwyneth Williams and Leila Romio and has published in prestigious journals such as SHILAP Revista de lepidopterología, PLoS ONE and American Journal of Respiratory and Critical Care Medicine.

In The Last Decade

Chris O’Callaghan

35 papers receiving 1.1k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Chris O’Callaghan United Kingdom 17 597 323 287 144 124 38 1.1k
Shyam Ramachandran United States 17 833 1.4× 577 1.8× 230 0.8× 497 3.5× 163 1.3× 39 1.9k
Mahmoud H. Abou Alaiwa United States 20 1.3k 2.2× 561 1.7× 167 0.6× 188 1.3× 256 2.1× 38 1.9k
Micha Aviram Israel 24 1.4k 2.4× 549 1.7× 240 0.8× 352 2.4× 298 2.4× 56 2.3k
Michael M. Myerburg United States 21 596 1.0× 423 1.3× 103 0.4× 212 1.5× 112 0.9× 48 1.3k
Qun Wu United States 21 266 0.4× 448 1.4× 64 0.2× 262 1.8× 400 3.2× 47 1.4k
Jeffrey J. Smith United States 16 1.2k 2.1× 550 1.7× 74 0.3× 134 0.9× 216 1.7× 22 2.0k
Birgitt Gutbier Germany 20 327 0.5× 514 1.6× 42 0.1× 385 2.7× 101 0.8× 42 1.2k
Mary K. Reinhard United States 20 199 0.3× 469 1.5× 123 0.4× 251 1.7× 87 0.7× 40 1.4k
Thomas K. Graves United States 23 169 0.3× 174 0.5× 253 0.9× 104 0.7× 176 1.4× 60 1.4k
Peter Braubach Germany 20 387 0.6× 346 1.1× 72 0.3× 111 0.8× 102 0.8× 73 1.1k

Countries citing papers authored by Chris O’Callaghan

Since Specialization
Citations

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

Fields of papers citing papers by Chris O’Callaghan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Chris O’Callaghan. 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 Chris O’Callaghan. The network helps show where Chris O’Callaghan may publish in the future.

Co-authorship network of co-authors of Chris O’Callaghan

This figure shows the co-authorship network connecting the top 25 collaborators of Chris O’Callaghan. A scholar is included among the top collaborators of Chris O’Callaghan 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 Chris O’Callaghan. Chris O’Callaghan 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.
Jović, Ozren, Marcus O’Mahony, Samuel Solomon, et al.. (2025). Merging Real-Time NIR and Process Parameter Measurements in a Fluidized Bed Granulation Process to Predict Particle Size. Pharmaceutics. 17(6). 720–720.
2.
Procé, Sophie Marion de, José Luis Campos, Alison Meynert, et al.. (2024). Whole genome sequencing enhances molecular diagnosis of primary ciliary dyskinesia. Pediatric Pulmonology. 59(12). 3322–3332. 3 indexed citations
3.
O’Callaghan, Chris, Nicholas Smith, Peter W. Barry, & John Denyer. (2017). Development of an Intelligent Spacer Data Logger System. Journal of Aerosol Medicine and Pulmonary Drug Delivery. 30(6). 444–450. 3 indexed citations
4.
Kulkarni, Hemant, Claire M. Smith, Dani Do Hyang Lee, et al.. (2016). Evidence of Respiratory Syncytial Virus Spread by Aerosol. Time to Revisit Infection Control Strategies?. American Journal of Respiratory and Critical Care Medicine. 194(3). 308–316. 97 indexed citations
5.
Smith, Claire M., Priya Radhakrishnan, Craig Winstanley, et al.. (2015). Bacteriophage Delivery by Nebulization and Efficacy Against Phenotypically Diverse Pseudomonas aeruginosa from Cystic Fibrosis Patients. Journal of Aerosol Medicine and Pulmonary Drug Delivery. 28(5). 353–360. 40 indexed citations
6.
Hirst, Robert A., Andrew Rutman, Gwyneth Williams, Neeta Kulkarni, & Chris O’Callaghan. (2014). Re-testing for primary ciliary dyskinesia (PCD) is only indicated for inner dynein arm defects. European Respiratory Journal. 44(Suppl 58). P1247–P1247.
7.
Tan, I‐Li, Priya Radhakrishnan, Robert A. Hirst, et al.. (2014). RHPS4 G-Quadruplex Ligand Induces Anti-Proliferative Effects in Brain Tumor Cells. PLoS ONE. 9(1). e86187–e86187. 25 indexed citations
8.
Smith, Claire M., et al.. (2013). The effect of ethanol and acetaldehyde on brain ependymal and respiratory ciliary beat frequency. PubMed. 2(1). 5–5. 8 indexed citations
9.
Strippoli, Marie‐Pierre F., Thomas Frischer, Angelo Barbato, et al.. (2012). Management of primary ciliary dyskinesia in European children: recommendations and clinical practice. European Respiratory Journal. 39(6). 1482–1491. 84 indexed citations
10.
O’Callaghan, Chris, et al.. (2012). Analysis of ependymal ciliary beat pattern and beat frequency using high speed imaging: comparison with the photomultiplier and photodiode methods. SHILAP Revista de lepidopterología. 1(1). 8–8. 32 indexed citations
11.
Kulkarni, Hemant, Claire M. Smith, Robert A. Hirst, et al.. (2011). Airborne transmission of respiratory syncytial virus (RSV) infection. European Respiratory Journal. 38(Suppl 55). 1722–1722. 4 indexed citations
12.
Scheuch, G., William D. Bennett, Lars Borgström, et al.. (2010). Deposition, Imaging, and Clearance: What Remains to be Done?. Journal of Aerosol Medicine and Pulmonary Drug Delivery. 23(S2). S–39. 45 indexed citations
13.
Hirst, Robert A., Andrew Rutman, Gwyneth Williams, & Chris O’Callaghan. (2010). Ciliated Air-Liquid Cultures as an Aid to Diagnostic Testing of Primary Ciliary Dyskinesia. CHEST Journal. 138(6). 1441–1447. 73 indexed citations
14.
Hirst, Robert A., et al.. (2010). The Behaviour of Both Listeria monocytogenes and Rat Ciliated Ependymal Cells Is Altered during Their Co-Culture. PLoS ONE. 5(5). e10450–e10450. 8 indexed citations
15.
Chilvers, Mark, et al.. (2009). Diagnostic Testing of Patients Suspected of Primary Ciliary Dyskinesia. American Journal of Respiratory and Critical Care Medicine. 181(4). 307–314. 91 indexed citations
16.
O’Callaghan, Chris, et al.. (2006). Ciliary Function and the Role of Cilia in Clearance. Journal of Aerosol Medicine. 19(1). 110–115. 117 indexed citations
17.
Rutman, A, et al.. (2004). Central Microtubular Agenesis Causing Primary Ciliary Dyskinesia. American Journal of Respiratory and Critical Care Medicine. 169(5). 634–637. 71 indexed citations
18.
Barry, Peter W. & Chris O’Callaghan. (1999). The output of budesonide from spacer devices assessed under simulated breathing conditions☆☆☆★. Journal of Allergy and Clinical Immunology. 104(6). 1205–1210. 27 indexed citations
19.
Barry, Peter W. & Chris O’Callaghan. (1999). An in vitro analysis of the output of budesonide from different nebulizers☆☆☆★. Journal of Allergy and Clinical Immunology. 104(6). 1168–1173. 28 indexed citations
20.
Barry, Peter W. & Chris O’Callaghan. (1998). The output of budesonide from nebulizers. Journal of Allergy and Clinical Immunology. 102(2). 321–322. 16 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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