PMID- 29067329 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240328 IS - 2352-8737 (Print) IS - 2352-8737 (Electronic) IS - 2352-8737 (Linking) VI - 3 IP - 2 DP - 2017 Jun TI - Associations between social relationship measures, serum brain-derived neurotrophic factor, and risk of stroke and dementia. PG - 229-237 LID - 10.1016/j.trci.2017.03.001 [doi] AB - INTRODUCTION: Mechanisms underlying social determinants of stroke and dementia are unclear and brain-derived neurotrophic factor (BDNF) may contribute as a molecular link. METHODS: Using the Framingham Study, we examined social relationship measures as predictors of higher serum BDNF level and cumulative incidence of stroke and dementia. RESULTS: Among 3294 participants, controlling for age and sex, isolation trended with lower BDNF (odds ratio = 0.69 [0.47-1.00]). Participants with more companionship had reduced risk for stroke (hazard ratio [HR] = 0.59 [0.41-0.83]) and dementia (HR = 0.67 [0.49-0.92]). Greater emotional support was associated with higher BDNF (odds ratio = 1.27 [1.04-1.54]), reduced dementia risk (HR = 0.69 [0.51-0.94], and among smokers, reduced stroke risk (HR = 0.23 [0.10-0.57]). Associations persisted after additional adjustments. BDNF partly mediated the total effect between emotional support and dementia risk. CONCLUSIONS: Availability of social support appears to be associated with increased BDNF levels and, in certain subsets, reduce risk of subsequent dementia and stroke, thus warranting study of these pathways to understand their role in neuroprotection. FAU - Salinas, Joel AU - Salinas J AD - Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA. AD - The Framingham Heart Study, Boston, MA, USA. AD - Department of Epidemiology, Harvard Center for Population and Development Studies, Harvard TH Chan School of Public Health, Boston, MA, USA. AD - Department of Social and Behavioral Sciences, Harvard Center for Population and Development Studies, Harvard TH Chan School of Public Health, Boston, MA, USA. FAU - Beiser, Alexa AU - Beiser A AD - The Framingham Heart Study, Boston, MA, USA. AD - Department of Biostatistics, Boston University School of Public Health, Boston, MA, USA. AD - Department of Neurology, Boston University School of Medicine, Boston, MA, USA. FAU - Himali, Jayandra J AU - Himali JJ AD - The Framingham Heart Study, Boston, MA, USA. AD - Department of Biostatistics, Boston University School of Public Health, Boston, MA, USA. AD - Department of Neurology, Boston University School of Medicine, Boston, MA, USA. FAU - Satizabal, Claudia L AU - Satizabal CL AD - The Framingham Heart Study, Boston, MA, USA. AD - Department of Neurology, Boston University School of Medicine, Boston, MA, USA. FAU - Aparicio, Hugo J AU - Aparicio HJ AD - The Framingham Heart Study, Boston, MA, USA. AD - Department of Neurology, Boston University School of Medicine, Boston, MA, USA. FAU - Weinstein, Galit AU - Weinstein G AD - The Framingham Heart Study, Boston, MA, USA. AD - School of Public Health, University of Haifa, Haifa, Israel. FAU - Mateen, Farrah J AU - Mateen FJ AD - Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA. FAU - Berkman, Lisa F AU - Berkman LF AD - Department of Epidemiology, Harvard Center for Population and Development Studies, Harvard TH Chan School of Public Health, Boston, MA, USA. AD - Department of Social and Behavioral Sciences, Harvard Center for Population and Development Studies, Harvard TH Chan School of Public Health, Boston, MA, USA. FAU - Rosand, Jonathan AU - Rosand J AD - Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA. AD - Center for Human Genetics Research, Massachusetts General Hospital, Boston, MA, USA. FAU - Seshadri, Sudha AU - Seshadri S AD - The Framingham Heart Study, Boston, MA, USA. AD - Department of Neurology, Boston University School of Medicine, Boston, MA, USA. LA - eng GR - R01 NS017950/NS/NINDS NIH HHS/United States GR - R01 AG054076/AG/NIA NIH HHS/United States GR - HHSN268201500001C/HL/NHLBI NIH HHS/United States GR - N01 HC025195/HC/NHLBI NIH HHS/United States GR - T32 NS048005/NS/NINDS NIH HHS/United States GR - R01 AG008122/AG/NIA NIH HHS/United States GR - R01 AG033193/AG/NIA NIH HHS/United States GR - HHSN268201500001I/HL/NHLBI NIH HHS/United States GR - N01HC25195/HL/NHLBI NIH HHS/United States GR - P30 AG010129/AG/NIA NIH HHS/United States GR - R01 AG031287/AG/NIA NIH HHS/United States PT - Journal Article DEP - 20170322 PL - United States TA - Alzheimers Dement (N Y) JT - Alzheimer's & dementia (New York, N. Y.) JID - 101650118 PMC - PMC5651441 OTO - NOTNLM OT - Brain-derived neurotrophic factor OT - Cohort studies OT - Dementia OT - Epidemiology OT - Social networks OT - Social relationships OT - Social support OT - Stroke EDAT- 2017/10/27 06:00 MHDA- 2017/10/27 06:01 PMCR- 2017/03/22 CRDT- 2017/10/26 06:00 PHST- 2017/10/26 06:00 [entrez] PHST- 2017/10/27 06:00 [pubmed] PHST- 2017/10/27 06:01 [medline] PHST- 2017/03/22 00:00 [pmc-release] AID - S2352-8737(17)30012-4 [pii] AID - 10.1016/j.trci.2017.03.001 [doi] PST - epublish SO - Alzheimers Dement (N Y). 2017 Mar 22;3(2):229-237. doi: 10.1016/j.trci.2017.03.001. eCollection 2017 Jun.