Christen Rune Stensvold

76 posts · 85,194 views

I hold a PhD in Health Sciences and have been working in the field of clinical microbiology for 12 years. My research deals with the diagnosis, epidemiology, clinical significance, genetic diversity, and taxonomy of common intestinal 'amoebae' with special emphasis on Blastocystis. Since 2006, I have published about 60 scientific, peer-reviewed papers, of which 25 or so are Blastocystis-specific papers. I'm based at the Department of Microbiology and Infection Control, Statens Serum Institut, Copenhagen, Denmark and did my post doc at London School of Hygiene & Tropical Medicine. F1000 Associate Faculty Member (since 09 December 2009). ORCID # 0000-0002-1417-7048 Facebook page: https://www.facebook.com/pages/Blastocystis-Parasite-Blog/161212370703270

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  • December 2, 2016
  • 08:30 PM
  • 73 views

This Month in Blastocystis Research (NOV 2016)

by Christen Rune Stensvold in Blastocystis Parasite Blog

Lab protocols on Blastocystis culture, cryopreservation, and subtyping are now available in Wiley Online Library.... Read more »

  • November 10, 2016
  • 06:14 AM
  • 213 views

This Month in Blatstocystis Research (OCT 2016)

by Christen Rune Stensvold in Blastocystis Parasite Blog

Highlights of the month include a Special Issue on Blastocystis appearing in Parasitology International, a study of mitochondrial genomes, relationships between gut parasites and gut bacteria, and a announcement of an EMBO anaerobic protist conference next year in the UK.... Read more »

Dogruman-Al F, Stensvold CR, & Yoshikawa H. (2016) Editorial - PAR INT - special issue on Blastocystis. Parasitology international, 65(6 Pt B), 749. PMID: 27742000  

Iebba V, Santangelo F, Totino V, Pantanella F, Monsia A, Di Cristanziano V, Di Cave D, Schippa S, Berrilli F, & D'Alfonso R. (2016) Gut microbiota related to Giardia duodenalis, Entamoeba spp. and Blastocystis hominis infections in humans from Côte d'Ivoire. Journal of infection in developing countries, 10(9), 1035-1041. PMID: 27694739  

  • September 2, 2016
  • 10:41 AM
  • 356 views

This Month in Blastocystis Research - AUG

by Christen Rune Stensvold in Blastocystis Parasite Blog

About the factors potentially limiting susceptibility to Blastocystis colonisation/infection.... Read more »

Blessmann, J., Ali, I., Ton Nu, P., Dinh, B., Ngo Viet, T., Le Van, A., Clark, C., & Tannich, E. (2003) Longitudinal Study of Intestinal Entamoeba histolytica Infections in Asymptomatic Adult Carriers. Journal of Clinical Microbiology, 41(10), 4745-4750. DOI: 10.1128/JCM.41.10.4745-4750.2003  

Scanlan PD, Stensvold CR, Rajilić-Stojanović M, Heilig HG, De Vos WM, O'Toole PW, & Cotter PD. (2014) The microbial eukaryote Blastocystis is a prevalent and diverse member of the healthy human gut microbiota. FEMS microbiology ecology, 90(1), 326-30. PMID: 25077936  

  • August 1, 2016
  • 07:36 PM
  • 436 views

This Month in Blastocystis Research - Interactive Edition

by Christen Rune Stensvold in Blastocystis Parasite Blog

What are your thoughts on Blastocystis carriage and age? Please comment!... Read more »

  • June 13, 2016
  • 08:30 PM
  • 504 views

This Month in Blastocystis Research (MAY 2016)

by Christen Rune Stensvold in Blastocystis Parasite Blog

The May entry of "This Month in Blastocystis Research" focusses especially on the increasing interest in Blastocystis in a gut microbiota context. ... Read more »

Andersen LO, Bonde I, Nielsen HB, & Stensvold CR. (2015) A retrospective metagenomics approach to studying Blastocystis. FEMS microbiology ecology, 91(7). PMID: 26130823  

Stensvold CR, & Clark CG. (2016) Current status of Blastocystis: A personal view. Parasitology international. PMID: 27247124  

O'Brien Andersen L, Karim AB, Roager HM, Vigsnæs LK, Krogfelt KA, Licht TR, & Stensvold CR. (2016) Associations between common intestinal parasites and bacteria in humans as revealed by qPCR. European journal of clinical microbiology . PMID: 27230509  

Ramírez JD, Sánchez A, Hernández C, Flórez C, Bernal MC, Giraldo JC, Reyes P, López MC, García L, Cooper PJ.... (2016) Geographic distribution of human Blastocystis subtypes in South America. Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases, 32-5. PMID: 27034056  

  • March 1, 2016
  • 05:39 PM
  • 677 views

This Month in Blastocystis Research (FEB 2016) - Rash Edition

by Christen Rune Stensvold in Blastocystis Parasite Blog

The February entry in the "This Month in Blastocystis Research" blog post series is all on Blastocystis and chronic urticaria (hives).... Read more »

Armentia A, Méndez J, Gómez A, Sanchís E, Fernández A, de la Fuente R, & Sánchez P. (1993) Urticaria by Blastocystis hominis. Successful treatment with paromomycin. Allergologia et immunopathologia, 21(4), 149-51. PMID: 8237719  

Lepczyńska M, Chen WC, & Dzika E. (2016) Mysterious chronic urticaria caused by Blastocystis spp.?. International journal of dermatology, 55(3), 259-66. PMID: 26469206  

Vogelberg C, Stensvold CR, Monecke S, Ditzen A, Stopsack K, Heinrich-Gräfe U, & Pöhlmann C. (2010) Blastocystis sp. subtype 2 detection during recurrence of gastrointestinal and urticarial symptoms. Parasitology international, 59(3), 469-71. PMID: 20363362  

  • January 30, 2016
  • 01:17 PM
  • 849 views

This Month in Blastocystis Research (JAN 2016)

by Christen Rune Stensvold in Blastocystis Parasite Blog

The first post in the This Month in Blastocystis Research series in 2016 is about Blastocystis epidemiology in India (including IBS patients), views on treatment, and Blastocystis in non-human primates.... Read more »

Pandey PK, Verma P, Marathe N, Shetty S, Bavdekar A, Patole MS, Stensvold CR, & Shouche YS. (2015) Prevalence and subtype analysis of Blastocystis in healthy Indian individuals. Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases, 296-9. PMID: 25701123  

Kurt Ö, Doğruman Al F, & Tanyüksel M. (2016) Eradication of Blastocystis in humans: Really necessary for all?. Parasitology international. PMID: 26780545  

  • December 29, 2015
  • 04:30 PM
  • 825 views

This Month in Blastocystis Research (DEC 2015)

by Christen Rune Stensvold in Blastocystis Parasite Blog

Practically all Blastocystis research has focussed on identifying a role for the parasite in disease. Meanwhile, no one has really tried to looked into what Blastocystis may tell us about human health. Together with partner labs, our lab has produced data suggesting that Blastocystis carriage is extremely common, and probably also extremely long lasting. We have also shown that the parasite is associated with certain gut microbial communities and that it is more common in healthy individuals tha........ Read more »

  • December 1, 2015
  • 04:48 PM
  • 805 views

This Month in Blastocystis Research (NOV 2015) - Persian Gulf Edition

by Christen Rune Stensvold in Blastocystis Parasite Blog

In the 'This Month' Series, I highlight three surveys on Blastocystis from the Persian Gulf (Qatar, UAE, and Iran), and highlight issues that may be associated with epidemiolocial studies. ... Read more »

  • October 5, 2015
  • 12:50 PM
  • 775 views

This Month in Blastocystis Research (SEP 2015)

by Christen Rune Stensvold in Blastocystis Parasite Blog

Slightly delayed, the "This Month" post is mainly on Blastocystis survyes, detection and host specificity.... Read more »

Stensvold CR, Suresh GK, Tan KS, Thompson RC, Traub RJ, Viscogliosi E, Yoshikawa H, & Clark CG. (2007) Terminology for Blastocystis subtypes--a consensus. Trends in parasitology, 23(3), 93-6. PMID: 17241816  

Wang W, Cuttell L, Bielefeldt-Ohmann H, Inpankaew T, Owen H, & Traub RJ. (2013) Diversity of Blastocystis subtypes in dogs in different geographical settings. Parasites , 215. PMID: 23883734  

  • September 1, 2015
  • 08:38 AM
  • 857 views

This Month in Blastocystis Research (AUG 2015)

by Christen Rune Stensvold in Blastocystis Parasite Blog

When is a parasite not a parasite? Where lies the border between parasites and mutalists? Are we letting some of our common colonisers down by mere predjudice? Find out in This Month of Blastocystis Research (AUG 2015).... Read more »

Andersen LO, Bonde I, Nielsen HB, & Stensvold CR. (2015) A retrospective metagenomics approach to studying Blastocystis. FEMS microbiology ecology, 91(7). PMID: 26130823  

Lukeš J, Stensvold CR, Jirků-Pomajbíková K, & Wegener Parfrey L. (2015) Are Human Intestinal Eukaryotes Beneficial or Commensals?. PLoS pathogens, 11(8). PMID: 26270819  

Scanlan PD, Stensvold CR, Rajilić-Stojanović M, Heilig HG, De Vos WM, O'Toole PW, & Cotter PD. (2014) The microbial eukaryote Blastocystis is a prevalent and diverse member of the healthy human gut microbiota. FEMS microbiology ecology, 90(1), 326-30. PMID: 25077936  

  • April 30, 2015
  • 07:41 PM
  • 1,046 views

This Month in Blastocystis Research (APR 2015)

by Christen Rune Stensvold in Blastocystis Parasite Blog

A post on trending Blastocystis research and on advances in the discoveries of plant extracts with anti-Blastocystis activity.... Read more »

  • November 29, 2014
  • 03:40 AM
  • 1,026 views

This Month in Blastocystis Research (NOV 2014): Blasting Blastocystis Edition

by Christen Rune Stensvold in Blastocystis Parasite Blog

A few notes on deliberate and inadvertent attempts to eradicate Blastocystis.... Read more »

  • October 29, 2014
  • 01:45 PM
  • 1,152 views

This Month in Blastocystis Research (OCT 2014) - Trick or Treat Edition

by Christen Rune Stensvold in Blastocystis Parasite Blog

October was mostly about conferences and funding. And why is no one studying endosymbiosis in Blastocystis?... Read more »

Fletcher S, Caprarelli G, Merif J, Andresen D, Hal SV, Stark D, & Ellis J. (2014) Epidemiology and geographical distribution of enteric protozoan infections in sydney, australia. Journal of public health research, 3(2), 298. PMID: 25343139  

Nowack EC, & Melkonian M. (2010) Endosymbiotic associations within protists. Philosophical transactions of the Royal Society of London. Series B, Biological sciences, 365(1541), 699-712. PMID: 20124339  

Prodeus TV, Zelia OP, Khlebnikova TA, & Pikul' DA. (2014) [Extraenteric infection caused by Blastocystis spp. in a female patient with liver abscess]. Meditsinskaia parazitologiia i parazitarnye bolezni, 6-9. PMID: 25296418  

  • September 30, 2014
  • 12:34 PM
  • 1,275 views

This Month in Blastocystis Research (SEP 2014)

by Christen Rune Stensvold in Blastocystis Parasite Blog

Do companion animals contribute to human Blastocystis? Do IBS patients have a higher prevalence of Blastocystis and Dientamoeba fragilis than healthy invididuals? Check out this issue of 'This Month in Blastocystis Research'.... Read more »

Krogsgaard LR, Engsbro AL, Stensvold CR, Vedel Nielsen H, & Bytzer P. (2014) The Prevalence of Intestinal Parasites is not Greater Among Individuals with IBS: a Population-Based Case-Control Study. Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association. PMID: 25229421  

Wang W, Cuttell L, Bielefeldt-Ohmann H, Inpankaew T, Owen H, & Traub RJ. (2013) Diversity of Blastocystis subtypes in dogs in different geographical settings. Parasites , 215. PMID: 23883734  

Wawrzyniak I, Poirier P, Viscogliosi E, Dionigia M, Texier C, Delbac F, & Alaoui HE. (2013) Blastocystis, an unrecognized parasite: an overview of pathogenesis and diagnosis. Therapeutic advances in infectious disease, 1(5), 167-78. PMID: 25165551  

  • August 24, 2014
  • 09:38 AM
  • 1,077 views

This Month in Blastocystis Research (AUG 2014)

by Christen Rune Stensvold in Blastocystis Parasite Blog

August 2014 saw interesting data emerging on Blastocystis in the background population, mRNA polyadnylation in the Blastocystis nuclear genome which calls for genome reannotation, and a large focus on Blastocystis in the ICOPA 2014 Congress in Mexico City.... Read more »

Fayer R, Elsasser T, Gould R, Solano G, Urban J Jr, & Santin M. (2014) Blastocystis tropism in the pig intestine. Parasitology research, 113(4), 1465-72. PMID: 24535732  

  • July 28, 2014
  • 03:10 PM
  • 1,253 views

This Month In Blastocystis Research (JUL 2014)

by Christen Rune Stensvold in Blastocystis Parasite Blog

A new study from Colombia sees Blastocystis as a quasi-ubiquitous organism.... Read more »

  • July 3, 2014
  • 07:44 PM
  • 1,007 views

This Month in Blastocystis Research (JUN 2014) - IMECs Edition

by Christen Rune Stensvold in Blastocystis Parasite Blog

A rare and extremely timely study using NGS tools to sequence DNA from intestinal microbial eukaryotic communities has been published in June 2014 in Frontiers in Microbiology; here's a small review.... Read more »

Parfrey, L., Walters, W., Lauber, C., Clemente, J., Berg-Lyons, D., Teiling, C., Kodira, C., Mohiuddin, M., Brunelle, J., Driscoll, M.... (2014) Communities of microbial eukaryotes in the mammalian gut within the context of environmental eukaryotic diversity. Frontiers in Microbiology. DOI: 10.3389/fmicb.2014.00298  

  • June 1, 2014
  • 12:30 AM
  • 1,197 views

This Month in Blastocystis Research (MAY 2014)

by Christen Rune Stensvold in Blastocystis Parasite Blog

Musings on Mucins... ... Read more »

Hansson GC. (2012) Role of mucus layers in gut infection and inflammation. Current opinion in microbiology, 15(1), 57-62. PMID: 22177113  

Fayer R, Elsasser T, Gould R, Solano G, Urban J Jr, & Santin M. (2014) Blastocystis tropism in the pig intestine. Parasitology research, 113(4), 1465-72. PMID: 24535732  

Johansson ME, Sjövall H, & Hansson GC. (2013) The gastrointestinal mucus system in health and disease. Nature reviews. Gastroenterology , 10(6), 352-61. PMID: 23478383  

Van den Abbeele, P., Roos, S., Eeckhaut, V., MacKenzie, D., Derde, M., Verstraete, W., Marzorati, M., Possemiers, S., Vanhoecke, B., Van Immerseel, F.... (2012) Incorporating a mucosal environment in a dynamic gut model results in a more representative colonization by lactobacilli. Microbial Biotechnology, 5(1), 106-115. DOI: 10.1111/j.1751-7915.2011.00308.x  

  • May 15, 2014
  • 08:53 AM
  • 1,089 views

Medscape: New Research Questions Pathogenicity of Parasite Dientamoeba fragilis

by Christen Rune Stensvold in Blastocystis Parasite Blog

Data emerging from European labs do not exactly support a role for Dientamoeba fragilis in disease. Dientamoeba made it to the headlines of Medscape Medical News from the 24th European Congress of Clinical Microbiology and Infections Diseases (ECCMID 2014) in Barcelona.... Read more »

Stensvold CR, Clark CG, & Röser D. (2013) Limited intra-genetic diversity in Dientamoeba fragilis housekeeping genes. Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases, 284-6. PMID: 23681023  

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