PMID- 24334166 OWN - NLM STAT- MEDLINE DCOM- 20140928 LR - 20180816 IS - 1872-7972 (Electronic) IS - 0304-3940 (Linking) VI - 559 DP - 2014 Jan 24 TI - Urinary BDNF-to-creatinine ratio is associated with aerobic fitness. PG - 169-73 LID - S0304-3940(13)01076-8 [pii] LID - 10.1016/j.neulet.2013.12.004 [doi] AB - Circulating levels of brain-derived neurotrophic factor (BDNF) are known to be affected by aerobic exercise. As the previous research focus in humans has been to examine peripheral BDNF levels through blood, serum, and platelet assay, the present study investigated the association between basal urinary BDNF concentration and indices of aerobic fitness in a sample of young adults (n=52). Aerobic fitness was evaluated with self-report of exercise habits and heart rate (HR) assessment during a sub-maximal Step Test. BDNF concentration was determined by enzyme-linked immunosorbent assay and adjusted for creatinine. Results indicated that the basal BDNFlog/creatinine ratio was positively associated with greater frequency of exercise and, during aerobic challenge, a quicker rise in HR upon exercise, lower peak HR during exercise, and lower HR during the recovery period, each indicative of enhanced fitness. These results highlight the utility of urine capture as a non-invasive technique to assess for exercise-mediated changes in peripheral BDNF. CI - Copyright (c) 2013 Elsevier Ireland Ltd. All rights reserved. FAU - Collins, Larisa R AU - Collins LR AD - Program in Neuroscience, Department of Psychology, Bates College, 4 Andrews Road, Lewiston, ME 04240, USA. Electronic address: lrcollins@mgh.harvard.edu. FAU - Koven, Nancy S AU - Koven NS AD - Program in Neuroscience, Department of Psychology, Bates College, 4 Andrews Road, Lewiston, ME 04240, USA. Electronic address: nkoven@bates.edu. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131212 PL - Ireland TA - Neurosci Lett JT - Neuroscience letters JID - 7600130 RN - 0 (Biomarkers) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 7171WSG8A2 (BDNF protein, human) RN - AYI8EX34EU (Creatinine) SB - IM MH - Adolescent MH - Biomarkers/urine MH - Brain-Derived Neurotrophic Factor/*urine MH - Creatinine/*urine MH - Exercise/*physiology MH - Female MH - Humans MH - Male MH - Physical Fitness/*physiology MH - *Self Report MH - Young Adult OTO - NOTNLM OT - Aerobic fitness OT - BDNF OT - Brain-derived neurotrophic factor OT - ELISA OT - Exercise OT - HR OT - Peripheral biomarker OT - beats-per-minute OT - bpm OT - brain-derived neurotrophic factor OT - enzyme-linked immunosorbent assay OT - heart rate EDAT- 2013/12/18 06:00 MHDA- 2014/10/01 06:00 CRDT- 2013/12/17 06:00 PHST- 2013/10/29 00:00 [received] PHST- 2013/11/25 00:00 [revised] PHST- 2013/12/04 00:00 [accepted] PHST- 2013/12/17 06:00 [entrez] PHST- 2013/12/18 06:00 [pubmed] PHST- 2014/10/01 06:00 [medline] AID - S0304-3940(13)01076-8 [pii] AID - 10.1016/j.neulet.2013.12.004 [doi] PST - ppublish SO - Neurosci Lett. 2014 Jan 24;559:169-73. doi: 10.1016/j.neulet.2013.12.004. Epub 2013 Dec 12.