OBJECTIVES: The prevalence of depression increases with age, as does the prevalence of higher levels of the cytokine interleukin-6 (IL-6). This analysis was performed to determine the association between increased levels of this cytokine and depression in a population-based sample. DESIGN: Cross-sectional cohort study. SETTING: Rural and urban counties in North Carolina. PARTICIPANTS: Community-dwelling older people. MEASUREMENTS: The association between IL-6 and other biologic variables with self-report depression was examined in 1686 persons aged 70 years and older in the third in-person survey wave (1991) of the Duke Established Population for Epidemiologic Studies of the Elderly (EPESE). Bivariate associations were established by the Spearman correlation, adjusted for age. A stepwise linear logistic regression model was used to derive a final model to assess multivariable effects on CES-D scores. RESULTS: Depression was correlated with IL-6 (P = .011), D-Dimer (P = .017), alpha-1-globulin (P = .023), alpha-2-globulin (P = .002), and beta globulin (P = .012). After controlling for age, race, and gender, IL-6 levels remained the only biologic variable significantly associated with depression (P = .035). CONCLUSION: These data suggest that the inflammatory marker, IL-6, is associated with depression in older people in this cross-sectional study. These results are compatible with the hypothesis of cytokine (IL-6) stimulation in geriatric depression as part of an overall immunoendocrine dysregulation.
OBJECTIVES: The prevalence of depression increases with age, as does the prevalence of higher levels of the cytokine interleukin-6 (IL-6). This analysis was performed to determine the association between increased levels of this cytokine and depression in a population-based sample. DESIGN: Cross-sectional cohort study. SETTING: Rural and urban counties in North Carolina. PARTICIPANTS: Community-dwelling older people. MEASUREMENTS: The association between IL-6 and other biologic variables with self-report depression was examined in 1686 persons aged 70 years and older in the third in-person survey wave (1991) of the Duke Established Population for Epidemiologic Studies of the Elderly (EPESE). Bivariate associations were established by the Spearman correlation, adjusted for age. A stepwise linear logistic regression model was used to derive a final model to assess multivariable effects on CES-D scores. RESULTS:Depression was correlated with IL-6 (P = .011), D-Dimer (P = .017), alpha-1-globulin (P = .023), alpha-2-globulin (P = .002), and beta globulin (P = .012). After controlling for age, race, and gender, IL-6 levels remained the only biologic variable significantly associated with depression (P = .035). CONCLUSION: These data suggest that the inflammatory marker, IL-6, is associated with depression in older people in this cross-sectional study. These results are compatible with the hypothesis of cytokine (IL-6) stimulation in geriatric depression as part of an overall immunoendocrine dysregulation.
Authors: Ali A Weinstein; Patricia A Deuster; Jennifer L Francis; Robert W Bonsall; Russell P Tracy; Willem J Kop Journal: Biol Psychol Date: 2010-01-29 Impact factor: 3.251
Authors: S Melanie Lee; Silena Te; Elizabeth C Breen; Richard Olmstead; Michael R Irwin; Joshua H Cho Journal: World J Biol Psychiatry Date: 2019-10-09 Impact factor: 4.132
Authors: Shaoyong Su; Andrew H Miller; Harold Snieder; J Douglas Bremner; James Ritchie; Carisa Maisano; Linda Jones; Nancy V Murrah; Jack Goldberg; Viola Vaccarino Journal: Psychosom Med Date: 2008-12-10 Impact factor: 4.312
Authors: Janice K Kiecolt-Glaser; Kristopher J Preacher; Robert C MacCallum; Cathie Atkinson; William B Malarkey; Ronald Glaser Journal: Proc Natl Acad Sci U S A Date: 2003-07-02 Impact factor: 11.205
Authors: Samuel Y S Wong; Edith M C Lau; Henry Lynn; P C Leung; Jean Woo; Steve R Cummings; Eric Orwoll Journal: Osteoporos Int Date: 2004-09-23 Impact factor: 4.507