PMID- 29459715 OWN - NLM STAT- MEDLINE DCOM- 20190916 LR - 20220408 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 8 IP - 1 DP - 2018 Feb 19 TI - Saliva as a medium to detect and measure biomarkers related to pain. PG - 3220 LID - 10.1038/s41598-018-21131-4 [doi] LID - 3220 AB - Saliva is often neglected as a body fluid of diagnostic or prognostic value, even though generally well accepted by the patients. This is due to lack of a standardized collection procedure. The aim of this study was to identify the ideal saliva collection technique and develop new sensitive methods to detect and analyse markers related to pain in healthy pain-free subjects. Plasma and five different saliva collection approached was evaluated during strictly controlled conditions. Levels of nerve growth factor (NGF), calcitonin gene-related peptide (CGRP) and brain derived neurotropic factor (BDNF) were determined using novel western blotting based technology. Glutamate and substance P (SP) was determined using commercial available methods. Several new isoforms were found for NGF, CGRP and BDNF in saliva. The isoform pattern showed significant variation in both expression and chemiluminescence levels between different collection methods. New sensitive methods to study pain related markers in saliva were developed in this study. Furthermore, we are first to demonstrate a correlation between the Glutamate concentration in stimulated whole saliva and blood. However, the fundamental conclusion drawn is the importance of consistency in the collection method. FAU - Jasim, Hajer AU - Jasim H AD - Division of Oral Diagnostics and Rehabilitation, Department of Dental Medicine and Scandinavian Center for Orofacial neuroscience (SCON), Karolinska Institutet, SE14104, Huddinge, Sweden. hajer.jasim@ki.se. AD - Folktandvarden Stockholm AB, Stockholm, Sweden. hajer.jasim@ki.se. FAU - Carlsson, Anders AU - Carlsson A AD - Division of Community Medicine, Department of Medical and Health Sciences, Faculty of Health Sciences, Linkoping University and Pain and Rehabilitation Center, Anaesthetics, Operations and Specialty Surgery Center, Region Ostergotland, Linkoping, Sweden. FAU - Hedenberg-Magnusson, Britt AU - Hedenberg-Magnusson B AD - Division of Oral Diagnostics and Rehabilitation, Department of Dental Medicine and Scandinavian Center for Orofacial neuroscience (SCON), Karolinska Institutet, SE14104, Huddinge, Sweden. AD - Folktandvarden Stockholm AB, Stockholm, Sweden. FAU - Ghafouri, Bijar AU - Ghafouri B AD - Division of Community Medicine, Department of Medical and Health Sciences, Faculty of Health Sciences, Linkoping University and Pain and Rehabilitation Center, Anaesthetics, Operations and Specialty Surgery Center, Region Ostergotland, Linkoping, Sweden. FAU - Ernberg, Malin AU - Ernberg M AD - Division of Oral Diagnostics and Rehabilitation, Department of Dental Medicine and Scandinavian Center for Orofacial neuroscience (SCON), Karolinska Institutet, SE14104, Huddinge, Sweden. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180219 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (Biomarkers) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 33507-63-0 (Substance P) RN - 3KX376GY7L (Glutamic Acid) RN - 7171WSG8A2 (BDNF protein, human) RN - 9061-61-4 (Nerve Growth Factor) RN - JHB2QIZ69Z (Calcitonin Gene-Related Peptide) SB - IM MH - Adult MH - Biomarkers/*analysis MH - Blotting, Western MH - Brain-Derived Neurotrophic Factor/analysis MH - Calcitonin Gene-Related Peptide/analysis MH - Female MH - Gene Expression MH - Glutamic Acid/analysis MH - Healthy Volunteers MH - Humans MH - Luminescence MH - Male MH - Nerve Growth Factor/analysis MH - *Pain MH - Plasma/chemistry MH - Saliva/*chemistry MH - Specimen Handling/methods MH - Substance P/analysis MH - Young Adult PMC - PMC5818517 COIS- The authors declare no competing interests. EDAT- 2018/02/21 06:00 MHDA- 2019/09/17 06:00 PMCR- 2018/02/19 CRDT- 2018/02/21 06:00 PHST- 2017/11/10 00:00 [received] PHST- 2018/01/30 00:00 [accepted] PHST- 2018/02/21 06:00 [entrez] PHST- 2018/02/21 06:00 [pubmed] PHST- 2019/09/17 06:00 [medline] PHST- 2018/02/19 00:00 [pmc-release] AID - 10.1038/s41598-018-21131-4 [pii] AID - 21131 [pii] AID - 10.1038/s41598-018-21131-4 [doi] PST - epublish SO - Sci Rep. 2018 Feb 19;8(1):3220. doi: 10.1038/s41598-018-21131-4.