Karen Madsen

18.2k total citations · 8 hit papers
187 papers, 12.5k citations indexed

About

Karen Madsen is a scholar working on Molecular Biology, Genetics and Surgery. According to data from OpenAlex, Karen Madsen has authored 187 papers receiving a total of 12.5k indexed citations (citations by other indexed papers that have themselves been cited), including 88 papers in Molecular Biology, 53 papers in Genetics and 45 papers in Surgery. Recurrent topics in Karen Madsen's work include Gut microbiota and health (77 papers), Inflammatory Bowel Disease (42 papers) and Diet and metabolism studies (28 papers). Karen Madsen is often cited by papers focused on Gut microbiota and health (77 papers), Inflammatory Bowel Disease (42 papers) and Diet and metabolism studies (28 papers). Karen Madsen collaborates with scholars based in Canada, United States and China. Karen Madsen's co-authors include Richard N. Fedorak, Jason Doyle, Naomi Hotte, Laurence D. Jewell, Michele M. Tavernini, Hugo Díaz, Julia B. Ewaschuk, Gilaad G. Kaplan, Michael Camilleri and Dina Kao and has published in prestigious journals such as JAMA, Nature Medicine and SHILAP Revista de lepidopterología.

In The Last Decade

Karen Madsen

185 papers receiving 12.1k citations

Hit Papers

Intestinal barrier function in health and g... 1999 2026 2008 2017 2012 2016 1999 2005 2017 200 400 600
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.

  1. Intestinal barrier function in health and gastrointestinal disease
    2012 696 citations Karen Madsen et al. profile →
  2. Characterization of the Gut Microbiome Using 16S or Shotgun Metagenomics
    2016 607 citations Naomi Hotte, Dina Kao et al. profile →
  3. Lactobacillus species prevents colitis in interleukin 10 gene–deficient mice
    1999 588 citations Karen Madsen, Laurence D. Jewell et al. profile →
  4. VSL#3 Probiotic-Mixture Induces Remission in Patients with Active Ulcerative Colitis
    2005 552 citations Richard N. Fedorak, Karen Madsen et al. The American Journal of Gastroenterology profile →
  5. Effect of Oral Capsule– vs Colonoscopy-Delivered Fecal Microbiota Transplantation on Recurrent Clostridium difficile Infection
    2017 438 citations Dina Kao, Brandi Roach et al. profile →
  6. FODMAPs alter symptoms and the metabolome of patients with IBS: a randomised controlled trial
    2016 351 citations Keith McIntosh, David E. Reed et al. Gut profile →
  7. Fecal microbial transplantation and fiber supplementation in patients with severe obesity and metabolic syndrome: a randomized double-blind, placebo-controlled phase 2 trial
    2021 206 citations Valentin Mocanu, Edward C. Deehan et al. profile →
  8. Effects of dietary fibre on metabolic health and obesity
    2024 57 citations Edward C. Deehan, Valentin Mocanu et al. profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Karen Madsen Canada 58 6.6k 2.4k 2.3k 1.9k 1.9k 187 12.5k
Benoît Chassaing United States 55 7.7k 1.2× 2.4k 1.0× 1.8k 0.8× 2.1k 1.1× 2.5k 1.3× 186 13.6k
Georgina L. Hold United Kingdom 54 9.6k 1.5× 1.8k 0.7× 2.3k 1.0× 2.5k 1.3× 2.0k 1.0× 142 15.1k
Dirk Haller Germany 65 7.9k 1.2× 2.1k 0.9× 2.7k 1.2× 1.6k 0.8× 2.3k 1.2× 231 14.9k
Elisabeth M. Bik United States 27 8.7k 1.3× 1.2k 0.5× 2.4k 1.0× 2.8k 1.4× 2.0k 1.1× 45 13.6k
Daisy Jonkers Netherlands 55 6.4k 1.0× 2.4k 1.0× 1.4k 0.6× 1.4k 0.7× 2.7k 1.4× 238 13.1k
Robert J. Brummer Netherlands 54 5.4k 0.8× 2.0k 0.9× 2.0k 0.9× 1.1k 0.6× 3.4k 1.8× 221 12.6k
Luis G. Bermúdez‐Humarán France 53 8.6k 1.3× 2.0k 0.8× 4.0k 1.7× 2.8k 1.4× 2.1k 1.1× 156 13.1k
Daniel N. Frank United States 58 10.0k 1.5× 2.4k 1.0× 1.6k 0.7× 3.3k 1.7× 2.2k 1.2× 220 16.3k
H. Rex Gaskins United States 63 7.6k 1.2× 1.5k 0.6× 2.6k 1.1× 1.6k 0.8× 2.1k 1.1× 172 14.9k
Jerry M. Wells Netherlands 53 7.2k 1.1× 1.4k 0.6× 3.7k 1.6× 2.2k 1.1× 1.7k 0.9× 167 13.7k

Countries citing papers authored by Karen Madsen

Since Specialization
Citations

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

Fields of papers citing papers by Karen Madsen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Karen Madsen

This figure shows the co-authorship network connecting the top 25 collaborators of Karen Madsen. A scholar is included among the top collaborators of Karen Madsen 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 Karen Madsen. Karen Madsen 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.
Tan, Qiming, Peng Ye, Edward C. Deehan, et al.. (2025). Fiber Intervention Study in Prader-Willi Syndrome: Insights into Metabolic and Microbiota Shifts. The Journal of Clinical Endocrinology & Metabolism. 110(11). 3120–3132. 1 indexed citations
2.
Kao, Dina, Karen Wong, Humberto Jijon, et al.. (2024). Preliminary Results From a Multicenter, Randomized Trial Using Fecal Microbiota Transplantation to Induce Remission in Patients With Mild-to-Moderate Crohn's Disease. The American Journal of Gastroenterology. 120(6). 1334–1344. 6 indexed citations
3.
Headley, Samuel, Donna J. Chapman, Michael J. Germain, et al.. (2024). Effects of High Amylose-Resistant Starch on Gut Microbiota and Uremic Toxin Levels in Patients With Stage-G3a-G4 Chronic Kidney Disease: A Randomized Trial. Journal of Renal Nutrition. 35(2). 248–258. 5 indexed citations
4.
Mocanu, Valentin & Karen Madsen. (2024). Dietary fibre and metabolic health: A clinical primer. Clinical and Translational Medicine. 14(10). e70018–e70018. 2 indexed citations
5.
Colin-Ramírez, Eloisa, Wendimagegn Alemayehu, Finlay A. McAlister, et al.. (2023). The Need for ib r ddition in ymp omatic eart ailure (FEAST-HF): A Randomized Controlled Pilot Trial. CJC Open. 5(10). 760–769. 2 indexed citations
6.
7.
8.
Torres‐Espín, Abel, Karen Madsen, Kristina A. Kigerl, et al.. (2020). Fecal transplant prevents gut dysbiosis and anxiety-like behaviour after spinal cord injury in rats. PLoS ONE. 15(1). e0226128–e0226128. 86 indexed citations
9.
Moayyedi, Paul, Glenda MacQueen, Çharles N. Bernstein, et al.. (2020). IMAGINE Network’s Mind And Gut Interactions Cohort (MAGIC) Study: a protocol for a prospective observational multicentre cohort study in inflammatory bowel disease and irritable bowel syndrome. BMJ Open. 10(10). e041733–e041733. 11 indexed citations
10.
McIntosh, Keith, David E. Reed, Theresa Schneider, et al.. (2016). FODMAPs alter symptoms and the metabolome of patients with IBS: a randomised controlled trial. Gut. 66(7). 1241–1251. 351 indexed citations breakdown →
11.
Kao, Dina, Brandi Roach, Heekuk Park, et al.. (2015). Fecal microbiota transplantation in the management of hepatic encephalopathy. Hepatology. 63(1). 339–340. 102 indexed citations
12.
Salim, Saad Y., Gilaad G. Kaplan, & Karen Madsen. (2013). Air pollution effects on the gut microbiota. Gut Microbes. 5(2). 215–219. 261 indexed citations
13.
Hotte, Naomi, Saad Y. Salim, Eric J. Albert, et al.. (2012). Patients with Inflammatory Bowel Disease Exhibit Dysregulated Responses to Microbial DNA. PLoS ONE. 7(5). e37932–e37932. 30 indexed citations
14.
Ewaschuk, Julia B., et al.. (2008). Secreted bioactive factors from Bifidobacterium infantis enhance epithelial cell barrier function. American Journal of Physiology-Gastrointestinal and Liver Physiology. 295(5). G1025–G1034. 457 indexed citations
15.
Salehi, Payam, David L. Bigam, Julia B. Ewaschuk, et al.. (2008). Alleviating Intestinal Ischemia-Reperfusion Injury in an In Vivo Large Animal Model. Transplantation. 85(6). 878–884. 9 indexed citations
16.
Ewaschuk, Julia B., John Walker, Hugo Díaz, & Karen Madsen. (2006). Bioproduction of Conjugated Linoleic Acid by Probiotic Bacteria Occurs In Vitro and In Vivo in Mice. Journal of Nutrition. 136(6). 1483–1487. 160 indexed citations
17.
Walker, John, Humberto Jijon, & Karen Madsen. (2006). AMP-activated protein kinase is a positive regulator of poly(ADP-ribose) polymerase. Biochemical and Biophysical Research Communications. 342(1). 336–341. 33 indexed citations
18.
Olson, David, Shin Kadota, Anthony Cornish, et al.. (2003). Intestinal decontamination using povidone-iodine compromises small bowel storage quality. Transplantation. 75(9). 1460–1462. 4 indexed citations
19.
Fujimoto, Yasuhiro, David Olson, Karen Madsen, et al.. (2002). Defining the Role of a Tailored Luminal Solution for Small Bowel Preservation. American Journal of Transplantation. 2(3). 229–236. 49 indexed citations
20.
Madsen, Karen. (1998). A Guide to Metasequoia at the Arnold Arboretum. Arnoldia.. 58(4). 80–84. 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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