Harold Tjalsma

12.3k total citations · 4 hit papers
103 papers, 9.6k citations indexed

About

Harold Tjalsma is a scholar working on Molecular Biology, Hematology and Nutrition and Dietetics. According to data from OpenAlex, Harold Tjalsma has authored 103 papers receiving a total of 9.6k indexed citations (citations by other indexed papers that have themselves been cited), including 42 papers in Molecular Biology, 40 papers in Hematology and 32 papers in Nutrition and Dietetics. Recurrent topics in Harold Tjalsma's work include Iron Metabolism and Disorders (40 papers), Bacterial Genetics and Biotechnology (25 papers) and Trace Elements in Health (24 papers). Harold Tjalsma is often cited by papers focused on Iron Metabolism and Disorders (40 papers), Bacterial Genetics and Biotechnology (25 papers) and Trace Elements in Health (24 papers). Harold Tjalsma collaborates with scholars based in Netherlands, United States and Switzerland. Harold Tjalsma's co-authors include Dorine W. Swinkels, Annemarie Boleij, Sierd Bron, Jan Maarten van Dijl, Albert Bolhuis, Bas E. Dutilh, Julian R. Marchesi, Jan D.H. Jongbloed, Erwin Kemna and Guus A. M. Kortman and has published in prestigious journals such as Journal of Biological Chemistry, Journal of Clinical Investigation and Genes & Development.

In The Last Decade

Harold Tjalsma

102 papers receiving 9.4k citations

Hit Papers

align trajectories

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.

A bacterial driver–passenger model for colorectal cancer: beyond the usual suspects

2012 682 citations Harold Tjalsma, Annemarie Boleij et al. profile →
Signal Peptide-Dependent Protein Transport in Bacillus subtilis : a Genome-Based Survey of the Secretome

2000 659 citations Harold Tjalsma, Jan D.H. Jongbloed et al. profile →
Iron fortification adversely affects the gut microbiome, increases pathogen abundance and induces intestinal inflammation in Kenyan infants

2014 481 citations Guus A. M. Kortman, Dorine W. Swinkels et al. profile →
Oral iron supplements increase hepcidin and decrease iron absorption from daily or twice-daily doses in iron-depleted young women

2015 363 citations Christophe Zeder, Harold Tjalsma et al. profile →

Peers

Countries citing papers authored by Harold Tjalsma

Since Specialization

Citations

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

Fields of papers citing papers by Harold Tjalsma

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Harold Tjalsma

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

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Conventional and novel peripheral blood iron markers compared against bone marrow in Malawian children 2014 ·Journal of Clinical Pathology ·(unknown), Michaël Boele van Hensbroek, Tjalling Leenstra, (unknown), Bernard J. Brabin, (unknown), (unknown), (unknown), Rob J. Kraaijenhagen, Harold Tjalsma, Dorine W. Swinkels, Job C. J. Calis	25
2	Nutritional iron turned inside out: intestinal stress from a gut microbial perspective 2014 ·FEMS Microbiology Reviews ·Guus A. M. Kortman, Manuela Raffatellu, Dorine W. Swinkels, Harold Tjalsma	201
3	The aetiology of anaemia during pregnancy: a study to evaluate the contribution of iron deficiency and common infections in pregnant Ugandan women 2014 ·Public Health Nutrition ·Rhona Baingana, (unknown), Harold Tjalsma, Dorine W. Swinkels, Lena Davidsson	30
4	Iron Supplementation in Suckling Piglets: How to Correct Iron Deficiency Anemia without Affecting Plasma Hepcidin Levels 2013 ·PLoS ONE ·Rafał R. Starzyński, Coby M. Laarakkers, Harold Tjalsma, Dorine W. Swinkels, M. Pieszka, Agnieszka Styś, Marcin Mickiewicz, Paweł Lipiński	58
5	Partial Associations of Dietary Iron, Smoking and Intestinal Bacteria with Colorectal Cancer Risk 2013 ·Nutrition and Cancer ·Ikuko Kato, Annemarie Boleij, Guus A. M. Kortman, Rian Roelofs, Zora Djurić, Richard K. Severson, Harold Tjalsma	35
6	Is colonoscopy necessary in cases of infection by Streptococcus bovis biotype II? 2013 ·European Journal of Clinical Microbiology & Infectious Diseases ·Juan Corredoira, Marı́a Pilar Alonso, María José García-Pais, Ramón Rabuñal Rey, Fernando Garcı́a-Garrote, Leopoldo López-Rosés, A. Lancho, Amparo Coira, J. Pita, Daniel Arnal Velasco, María López-Álvarez, Harold Tjalsma, J. Varela	19
7	Iron Availability Increases the Pathogenic Potential of Salmonella Typhimurium and Other Enteric Pathogens at the Intestinal Epithelial Interface 2012 ·PLoS ONE ·Guus A. M. Kortman, Annemarie Boleij, Dorine W. Swinkels, Harold Tjalsma	162
8	Gut bacteria in health and disease: a survey on the interface between intestinal microbiology and colorectal cancer 2012 ·Biological reviews/Biological reviews of the Cambridge Philosophical Society ·Annemarie Boleij, Harold Tjalsma	111
9	Bacterial Responses to a Simulated Colon Tumor Microenvironment 2012 ·Molecular & Cellular Proteomics ·Annemarie Boleij, Bas E. Dutilh, Guus A. M. Kortman, Rian Roelofs, Coby M. Laarakkers, Udo F. H. Engelke, Harold Tjalsma	36
10	Selective Antibody Response to Streptococcus gallolyticus Pilus Proteins in Colorectal Cancer Patients 2011 ·Cancer Prevention Research ·Annemarie Boleij, Rian Roelofs, Camille Danne, Samuel Bellais, Shaynoor Dramsi, Ikuko Kato, Harold Tjalsma	26
11	Clinical Importance of Streptococcus gallolyticus Infection Among Colorectal Cancer Patients: Systematic Review and Meta-analysis 2011 ·Clinical Infectious Diseases ·Annemarie Boleij, Marleen M. H. J. van Gelder, Dorine W. Swinkels, Harold Tjalsma	267
12	Mass Spectrometry Analysis of Hepcidin Peptides in Experimental Mouse Models 2011 ·PLoS ONE ·Harold Tjalsma, Coby M. Laarakkers, Rachel P. L. van Swelm, Milan Theurl, Igor Theurl, Erwin Kemna, Yuri E. M. van der Burgt, Hanka Venselaar, Bas E. Dutilh, Frans G. M. Rüssel, Günter Weiß, Rosalinde Masereeuw, Robert E. Fleming, Dorine W. Swinkels	24
13	Afebrile Plasmodium falciparum parasitemia decreases absorption of fortification iron but does not affect systemic iron utilization: a double stable-isotope study in young Beninese women 2010 ·American Journal of Clinical Nutrition ·Colin I. Cercamondi, Ines Egli, (unknown), Romain Dossa, Christophe Zeder, (unknown), Harold Tjalsma, Erwin T. Wiegerinck, Toshihiko Tanno, Richard F. Hurrell, Joseph D. Hounhouigan, Michael Zimmermann	93
14	Increased exposure to bacterial antigen RpL7/L12 in early stage colorectal cancer patients 2010 ·Cancer ·Annemarie Boleij, Rian Roelofs, (unknown), T. Schülin, Philippe Glaser, Dorine W. Swinkels, Ikuko Kato, Harold Tjalsma	37
15	Nitric Oxide Does Not Contribute to Inflammation-Induced Hypoferremia in Humans 2007 ·Acta Haematologica ·Erwin Kemna, Peter Pickkers, Harold Tjalsma, Dorine W. Swinkels	0
16	Proteomics‐based consensus prediction of protein retention in a bacterial membrane 2005 ·PROTEOMICS ·Harold Tjalsma, Jan Maarten van Dijl	74
17	Type I signal peptidases of Gram-positive bacteria 2004 ·Biochimica et Biophysica Acta (BBA) - Molecular Cell Research ·Maarten L. van Roosmalen, Nick Geukens, Jan D.H. Jongbloed, Harold Tjalsma, Jean‐Yves F. Dubois, Sierd Bron, Jan Maarten van Dijl, Jozef Anné	117
18	Active Lipoprotein Precursors in the Gram-positive EubacteriumLactococcus lactis 2003 ·Journal of Biological Chemistry ·(unknown), Harold Tjalsma, Jan Maarten van Dijl, Anne de Jong, Kees Leenhouts, Girbe Buist, Gerard Venema	32
19	Functional genomic analysis of the Bacillus subtilis Tat pathway for protein secretion 2002 ·Journal of Biotechnology ·Jan Maarten van Dijl, Peter Braun, Colin Robinson, Wim J. Quax, Haike Antelmann, Michael Hecker, Jörg P. Müller, Harold Tjalsma, Sierd Bron, Jan D.H. Jongbloed	57
20	The Role of Lipoprotein Processing by Signal Peptidase II in the Gram-positive Eubacterium Bacillus subtilis 1999 ·Journal of Biological Chemistry ·Harold Tjalsma, Vesa P. Kontinen, Zoltán Prágai, (unknown), Rob Meima, Gerard Venema, Sierd Bron, Matti Sarvas, Jan Maarten van Dijl	108

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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