His main research concerns Hepcidin, Internal medicine, Biochemistry, Immunology and Endocrinology. The concepts of his Hepcidin study are interwoven with issues in In vitro, Urine, Ferritin, Mass spectrometry and Serum iron. His biological study spans a wide range of topics, including Regulation of gene expression and Function.
Harold Tjalsma works mostly in the field of Immunology, limiting it down to topics relating to Colorectal cancer and, in certain cases, Large intestine, Odds ratio and Interquartile range, as a part of the same area of interest. His Endocrinology research focuses on Anemia and how it relates to Quantitative analysis, Hereditary hemochromatosis and Thalassemia. The Secretory protein study combines topics in areas such as Transport protein and Cell membrane.
His scientific interests lie mostly in Hepcidin, Internal medicine, Biochemistry, Immunology and Endocrinology. He combines subjects such as Serum iron, Iron-deficiency anemia, Ferritin and Iron deficiency with his study of Hepcidin. In his study, which falls under the umbrella issue of Internal medicine, Odds ratio and Colonoscopy is strongly linked to Gastroenterology.
Biochemistry is closely attributed to Bacillus subtilis in his research. His Immunology research focuses on subjects like Colorectal cancer, which are linked to Disease and Large intestine. Harold Tjalsma interconnects Transferrin saturation and Erythropoiesis in the investigation of issues within Endocrinology.
Hepcidin, Internal medicine, Microbiology, Endocrinology and Ferritin are his primary areas of study. Hepcidin is a subfield of Immunology that Harold Tjalsma tackles. His study in the field of Inflammation also crosses realms of Streptococcus gallolyticus.
His work on Anemia, Prospective cohort study and Colonoscopy as part of general Internal medicine research is frequently linked to Population, bridging the gap between disciplines. His studies in Microbiology integrate themes in fields like Microbiome, Pathogenic Escherichia coli, Micronutrient and Salmonella enterica. In his research on the topic of Ferritin, Iron levels, Transferrin saturation and Intestinal mucosa is strongly related with Transferrin.
Harold Tjalsma focuses on Microbiology, Microbiome, Microbial metabolism, Gut flora and Hepcidin. His studies deal with areas such as Pathogenic Escherichia coli, Faecal calprotectin and Micronutrient as well as Microbiology. His Microbial metabolism study incorporates themes from Biochemistry, Fatty acid and Human microbiome.
His work deals with themes such as Morning, International Prognostic Index, Hemoglobin, Endocrinology and Ferritin, which intersect with Hepcidin. His research on Morning frequently connects to adjacent areas such as Immunology. Harold Tjalsma is studying Immune system, which is a component of Immunology.
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A bacterial driver-passenger model for colorectal cancer: beyond the usual suspects.
Harold Tjalsma;Annemarie Boleij;Julian Roberto Marchesi;Bas E. Dutilh.
Nature Reviews Microbiology (2012)
Proteomics of Protein Secretion by Bacillus subtilis: Separating the “Secrets” of the Secretome
H Tjalsma;H. Antelmann;Jan Jongbloed;Peter Braun.
Microbiology and Molecular Biology Reviews (2004)
Towards the Human Colorectal Cancer Microbiome
Julian R. Marchesi;Bas E. Dutilh;Bas E. Dutilh;Neil Hall;Wilbert H. M. Peters.
PLOS ONE (2011)
Hepcidin: from discovery to differential diagnosis
Erwin H J M Kemna;Harold Tjalsma;Hans L Willems;Dorine W Swinkels.
Iron fortification adversely affects the gut microbiome, increases pathogen abundance and induces intestinal inflammation in Kenyan infants
Tanja Jaeggi;Guus A M Kortman;Diego Moretti;Christophe Chassard.
A Proteomic View on Genome-Based Signal Peptide Predictions
Haike Antelmann;Harold Tjalsma;Birgit Voigt;Steffen Ohlmeier.
Genome Research (2001)
Oral iron supplements increase hepcidin and decrease iron absorption from daily or twice-daily doses in iron-depleted young women.
Diego Moretti;Jeroen S. Goede;Christophe Zeder;Markus Jiskra.
Clinical Importance of Streptococcus gallolyticus Infection Among Colorectal Cancer Patients: Systematic Review and Meta-analysis
Annemarie Boleij;Marleen M. H. J. van Gelder;Dorine W. Swinkels;Harold Tjalsma.
Clinical Infectious Diseases (2011)
Hepcidin in Human Iron Disorders: Diagnostic Implications
Joyce J.C. Kroot;Harold Tjalsma;Robert E. Fleming;Dorine W. Swinkels.
Clinical Chemistry (2011)
Mass spectrometry-based hepcidin measurements in serum and urine: analytical aspects and clinical implications.
Erwin H.J.M. Kemna;Harold Tjalsma;Vladimir N. Podust;Dorine W. Swinkels.
Clinical Chemistry (2007)
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