The Impact of Pre-Analytical Conditions on Human Serum Peptidome Profiling.
Proteomics Clin Appl
; 12(3): e1700183, 2018 05.
Article
in En
| MEDLINE
| ID: mdl-29476601
ABSTRACT
The successful use of proteomic technology for the discovery of clinically relevant, new candidate biomarkers, especially in the low molecular weight range (peptidome), calls for a careful consideration of standardized operating procedures (SOP) for pre-analytical variables, including samples handling and storage. The current lack of standardization, widely considered a relevant source of random and systematic errors, underlies the uncertainty of analytical results and poor comparability, especially in multi-centric or inter-laboratory studies. In their recent study, Tsuchida et al. used the MALDI-TOF/MS technique to investigate the effect of long-term storage at -20 °C, -80 °C, and in liquid nitrogen on serum samples obtained for peptidomic analyses. The authors have also evaluated the effects of different sample thawing modalities. By including results from the same series as that reported on in a previous publication, they have effectively defined some important requirements for the peptidomic analysis of serum samples (e.g., maximum time intervals between venepuncture and serum separation [1 h], minimum temperature for long-term sera storage temperature [-80 °C], ideal conditions for sample thawing).
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
/
Proteomics
Type of study:
Clinical_trials
Limits:
Humans
Language:
En
Journal:
Proteomics Clin Appl
Journal subject:
BIOQUIMICA
Year:
2018
Document type:
Article
Affiliation country:
Italia