PMID- 35630172 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220716 IS - 2072-666X (Print) IS - 2072-666X (Electronic) IS - 2072-666X (Linking) VI - 13 IP - 5 DP - 2022 Apr 29 TI - Microfluidic Paper-Based Blood Plasma Separation Device as a Potential Tool for Timely Detection of Protein Biomarkers. LID - 10.3390/mi13050706 [doi] LID - 706 AB - A current challenge regarding microfluidic paper-based analytical devices (microPAD) for blood plasma separation (BPS) and electrochemical immunodetection of protein biomarkers is how to achieve a microPAD that yields enough plasma to retain the biomarker for affinity biosensing in a functionalized electrode system. This paper describes the development of a BPS microPAD to detect and quantify the S100B biomarker from peripheral whole blood. The device uses NaCl functionalized VF2 filter paper as a sample collection pad, an MF1 filter paper for plasma retention, and an optimized microfluidic channel geometry. An inverted light microscope, scanning electron microscope (SEM), and image processing software were used for visualizing BPS efficiency. A design of experiments (DOE) assessed the device's efficacy using an S100B ELISA Kit to measure clinically relevant S100B concentrations in plasma. The BPS device obtained 50 muL of plasma from 300 muL of whole blood after 3.5 min. The statistical correlation of S100B concentrations obtained using plasma from standard centrifugation and the BPS device was 0.98. The BPS device provides a simple manufacturing protocol, short fabrication time, and is capable of S100B detection using ELISA, making one step towards the integration of technologies aimed at low-cost POC testing of clinically relevant biomarkers. FAU - Burgos-Florez, Francisco AU - Burgos-Florez F AUID- ORCID: 0000-0002-5381-1398 AD - Biotechnology Research Group, Universidad del Norte, Barranquilla 081007, Colombia. AD - Rational Use of Energy and Preservation of the Environment Group (UREMA), Universidad del Norte, Barranquilla 081007, Colombia. AD - Health and Technological Innovation, Universidad Simon Bolivar, Facultad de Ingenierias, Barranquilla 080002, Colombia. FAU - Rodriguez, Alexander AU - Rodriguez A AUID- ORCID: 0000-0001-6424-7254 AD - Biotechnology Research Group, Universidad del Norte, Barranquilla 081007, Colombia. FAU - Cervera, Eliana AU - Cervera E AUID- ORCID: 0000-0002-7098-1620 AD - Biotechnology Research Group, Universidad del Norte, Barranquilla 081007, Colombia. FAU - De Avila, Marcio AU - De Avila M AUID- ORCID: 0000-0001-7637-5106 AD - Biotechnology Research Group, Universidad del Norte, Barranquilla 081007, Colombia. FAU - Sanjuan, Marco AU - Sanjuan M AD - Rational Use of Energy and Preservation of the Environment Group (UREMA), Universidad del Norte, Barranquilla 081007, Colombia. FAU - Villalba, Pedro J AU - Villalba PJ AUID- ORCID: 0000-0003-3015-0299 AD - Biotechnology Research Group, Universidad del Norte, Barranquilla 081007, Colombia. LA - eng GR - 757-2016/Colciencias/ GR - 809-2018/Gobernacion del Atlantico/ PT - Journal Article DEP - 20220429 PL - Switzerland TA - Micromachines (Basel) JT - Micromachines JID - 101640903 PMC - PMC9142996 OTO - NOTNLM OT - ELISA OT - TBI biomarkers OT - blood plasma separation OT - microfluidics OT - paper COIS- The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results. EDAT- 2022/05/29 06:00 MHDA- 2022/05/29 06:01 PMCR- 2022/04/29 CRDT- 2022/05/28 01:31 PHST- 2022/04/02 00:00 [received] PHST- 2022/04/26 00:00 [revised] PHST- 2022/04/26 00:00 [accepted] PHST- 2022/05/28 01:31 [entrez] PHST- 2022/05/29 06:00 [pubmed] PHST- 2022/05/29 06:01 [medline] PHST- 2022/04/29 00:00 [pmc-release] AID - mi13050706 [pii] AID - micromachines-13-00706 [pii] AID - 10.3390/mi13050706 [doi] PST - epublish SO - Micromachines (Basel). 2022 Apr 29;13(5):706. doi: 10.3390/mi13050706.