Johan Ek

986 citations

23 papers · 776 indexed · h-index 15

Impact in

Gastroenterology top 1%
- Celiac Disease Research and Management
Clinical Biochemistry top 5%
- Metabolism and Genetic Disorders

Papers in ⓘ

Gastroenterology 11
- Celiac Disease Research and Management 11
Clinical Biochemistry 4
- Metabolism and Genetic Disorders 4

Co-authors: Ludvig M. Sollid (7 shared papers)Erik Thorsby (2 shared papers)Erik M. Magnus (2 shared papers)Rafał Płoski (1 shared paper)Henry Ascher (9 shared papers)Audur H. Gudjónsdóttir (8 shared papers)Ingemar Björkhem (2 shared papers)Staffan Nilsson (6 shared papers)
Journals: The Journal of Pediatrics (3 papers)Journal of Pediatric Gastroenterology and Nutrition (3 papers)Acta Obstetricia Et Gynecologica Scandinavica (3 papers)European Journal of Human Genetics (2 papers)Human Immunology (2 papers)
Partner nations: Norway Sweden Netherlands

In The Last Decade

Johan Ek

23 papers receiving 722 citations

Peers

Countries citing papers authored by Johan Ek

Since Specialization

Citations

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

Fields of papers citing papers by Johan Ek

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authors

The 25 scholars most cited alongside Johan Ek, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Johan Ek Line = papers co-authored together Johan Ek links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 23 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	On the HLA‐DQ(α10501, β10201)‐associated susceptibility in celiac disease: A possible gene dosage effect of DQB10201* Tissue Antigens ·Rafał Płoski, Johan Ek, Erik Thorsby, Ludvig M. Sollid	1993	139
2	Genome-wide linkage analysis of Scandinavian affected sib-pairs supports presence of susceptibility loci for celiac disease on chromosomes 5 and 11 European Journal of Human Genetics ·Åsa Torinsson Naluai, Staffan Nilsson, Audur H. Gudjónsdóttir, A.S. Louka, Henry Ascher, Johan Ek, Birgitta Hallberg, Lena Samuelsson, B. Kristiansson, Tommy Martinsson, Olle Nerman, Ludvig M. Sollid, Jan Wahlström	2001	78
3	Susceptibility to develop celiac disease is primarily associated with HLA-DQ alleles Human Immunology ·Anne Spurkland, Ludvig M. Sollid, Kjersti S. Rønningen, Vidar Bosnes, Johan Ek, Frode Vartdal, Erik Thorsby	1990	69
4	PLASMA AND RED BLOOD CELL FOLATE DURING NORMAL PREGNANCIES Acta Obstetricia Et Gynecologica Scandinavica ·Johan Ek, Erik M. Magnus	1981	59
5	Refsum's disease, adrenoleucodystrophy, and the Zellweger syndrome Scandinavian Journal of Clinical and Laboratory Investigation ·Oddvar Stokke, Sverre Skrede, Johan Ek, Ingemar Björkhem	1984	50
6	A Possible Mechanism behind Autoimmune Disorders Discovered By Genome-Wide Linkage and Association Analysis in Celiac Disease PLoS ONE ·Malin Östensson, Caroline Montén, Jonas Bačelis, Audur H. Gudjónsdóttir, Svetlana Adamovic, Johan Ek, Henry Ascher, Elisabet Pollak, Henrik Arnell, Lars Browaldh, Daniel Agardh, Jan Wahlström, Staffan Nilsson, Åsa Torinsson Naluai	2013	45
7	Association Analysis of MYO9B Gene Polymorphisms with Celiac Disease in a Swedish/Norwegian Cohort Human Immunology ·Silja Svanstrøm Amundsen, Alienke J. Monsuur, Martin C. Wapenaar, Benedicte A. Lie, Johan Ek, Audur H. Gudjónsdóttir, Henry Ascher, Cisca Wijmenga, Ludvig M. Sollid	2006	42
8	Investigation of the metabolic pattern in maple syrup urine disease by means of glass capillary gas chromatography and mass spectrometry Journal of Chromatography B Biomedical Sciences and Applications ·Cornelis Jakobs, E. Solem, Johan Ek, K. Halvorsen, Egil Jellum	1977	42
9	FOXP3 polymorphisms in type 1 diabetes and coeliac disease Journal of Autoimmunity ·Marit Bjørnvold, Silja Svanstrøm Amundsen, Lars C. Stene, Geir Joner, Knut Dahl‐Jørgensen, Pål R. Njølstad, Johan Ek, Henry Ascher, Audur H. Gudjónsdóttir, Benedicte A. Lie, Beate Skinningsrud, Hanne E. Akselsen, Kjersti S. Rønningen, Ludvig M. Sollid, Dag E. Undlien	2006	37
10	Peroxisomal dysfunction in a boy with neurologic symptoms and amaurosis (Leber disease): Clinical and biochemical findings similar to those observed in Zellweger syndrome The Journal of Pediatrics ·Johan Ek, Bengt Frode Kase, Albrecht Reith, Ingemar Björkhem, Jan I. Pedersen	1986	34
11	Plasma and red cell folate values in newborn infants and their mothers in relation to gestational age The Journal of Pediatrics ·Johan Ek	1980	34
12	The Risk of Celiac Disease in 107 Families With at Least Two Affected Siblings Journal of Pediatric Gastroenterology and Nutrition ·Audur H. Gudjónsdóttir, Staffan Nilsson, Johan Ek, B. Kristiansson, Henry Ascher	2004	29
13	Coeliac disease patients carry conserved HLA-DR3-DQ2 haplotypes revealed by association of TNF alleles Immunogenetics ·A.S. Louka, Benedicte A. Lie, Bente A. Talseth‐Palmer, Henry Ascher, Johan Ek, Audur H. Gudj�nsd�ttir, Ludvig M. Sollid	2003	26
14	Plasma and Red Cell Folate in Mothers and Infants in Normal Pregnancies Acta Obstetricia Et Gynecologica Scandinavica ·Johan Ek	1982	17
15	Plasma and red cell folate values and folate requirements in formula-fed term infants The Journal of Pediatrics ·Johan Ek, Erik M. Magnus	1982	15
16	A comprehensive screen for SNP associations on chromosome region 5q31–33 in Swedish/Norwegian celiac disease families European Journal of Human Genetics ·Silja Svanstrøm Amundsen, Svetlana Adamovic, Åsa Hellqvist, Staffan Nilsson, Audur H. Gudjónsdóttir, Henry Ascher, Johan Ek, Kristina Larsson, Jan Wahlström, Benedicte A. Lie, Ludvig M. Sollid, Åsa Torinsson Naluai	2007	13
17	Acute Hematogenous Osteomyelitis in Infancy and Childhood Clinical Pediatrics ·Johan Ek	1971	13
18	Association Between Genotypes and Phenotypes in Coeliac Disease Journal of Pediatric Gastroenterology and Nutrition ·Audur H. Gudjónsdóttir, Staffan Nilsson, Åsa Torinsson Naluai, Johan Ek, Silja Svanstrøm Amundsen, Jan Wahlström, Henry Ascher	2009	12
19	Iron status and weaning practices among Norwegian and immigrant infants Nutrition Research ·Margareta Wandel, Rønnaug Aa Fagerli, Petra Turet Olsen, Berit Borch‐Iohnsen, Johan Ek	1996	10
20	Whole Blood Glucose Determination in Newborn Infants, Comparison and Evaluation of Five Different Methods Acta Paediatrica ·Johan Ek, Ludvig N.W. Daae	1967	4

About Johan Ek

Johan Ek is a scholar working on Gastroenterology, Clinical Biochemistry, Genetics, Hematology and Rheumatology, having authored 23 papers that have together received 776 indexed citations. Recurring topics across this work include Celiac Disease Research and Management (11 papers), Microscopic Colitis (5 papers), Helicobacter pylori-related gastroenterology studies (5 papers), Metabolism and Genetic Disorders (4 papers), Hemoglobinopathies and Related Disorders (4 papers), Iron Metabolism and Disorders (4 papers), Folate and B Vitamins Research (4 papers) and Galectins and Cancer Biology (3 papers). The work is most often cited by research in Gastroenterology (392 citations), Clinical Biochemistry (80 citations), Immunology (193 citations), Rheumatology (122 citations) and Epidemiology (279 citations). Johan Ek has collaborated with scholars based in Norway, Sweden and Netherlands. Frequent co-authors include Ludvig M. Sollid, Erik Thorsby, Erik M. Magnus, Rafał Płoski, Henry Ascher, Audur H. Gudjónsdóttir, Ingemar Björkhem, Staffan Nilsson, Sverre Skrede and Oddvar Stokke. Their work appears in journals such as The Journal of Pediatrics, Journal of Pediatric Gastroenterology and Nutrition, Acta Obstetricia Et Gynecologica Scandinavica, European Journal of Human Genetics and Human Immunology.

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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