Immuno-MALDI-TOF-MS in the Clinic.

Clin Chem

Segal Cancer Proteomics Centre, Lady Davis Institute, Jewish General Hospital, McGill University, Montréal, Quebec, Canada;

Published: September 2018

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Article Synopsis
  • C-reactive protein (CRP) levels are lower in individuals with the APOEε4 allele, potentially influenced by factors like body mass index (BMI), diabetes, and statin use.
  • The study analyzed 2,700 older adults to explore the connection between CRP levels and APOEε4 status while considering BMI, diabetes, and statin medication.
  • Results showed that APOEε4 carriers had higher CRP levels regardless of BMI, diabetes, or statin use, indicating that CRP response to inflammation may differ in these individuals, highlighting implications for neurodegenerative and cardiovascular diseases.
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Protein biomarkers and microheterogeneity have attracted increasing attention in epidemiological and clinical research. Knowledge of within-person reproducibility over time is paramount to determine whether a single measurement accurately reflects an individual's long-term exposure. Yet, research investigating within-person reproducibility for proteoforms is limited.

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Protein biomarker microheterogeneity has attracted increasing attention in epidemiological and clinical research studies. Knowledge concerning the preanalytical stability of proteins is paramount to assess the biological significance of their proteoforms. We investigated the stability of the inflammatory markers C-reactive protein (CRP), serum amyloid A (SAA), and calprotectin (S100A8/9), and the renal function marker, cystatin C (CnC).

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Immuno-MALDI-TOF-MS in the Clinic.

Clin Chem

September 2018

Segal Cancer Proteomics Centre, Lady Davis Institute, Jewish General Hospital, McGill University, Montréal, Quebec, Canada;

View Article and Find Full Text PDF

Circulating proteins are widely used as biomarkers in clinical applications for the diagnosis, prediction, and treatment of numerous diseases. Immunoassays are the most common technologies for quantification of protein biomarkers and exist in various formats. Traditional immunoassays offer sensitive and fast analyses but cannot differentiate between proteoforms.

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