The association between frontal lobe perfusion and depressive symptoms in later life
| Autor: | Triona McNicholas, Hugh Nolan, Daniel Carey, Paul Claffey, Louise Newman, Rose Anne Kenny, Robert Briggs, Sean Kennelly |
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| Rok vydání: | 2019 |
| Předmět: |
Male
medicine.medical_specialty Blood Pressure 030204 cardiovascular system & hematology Severity of Illness Index Hypotension Orthostatic 03 medical and health sciences 0302 clinical medicine Neuroimaging Internal medicine Epidemiology medicine Humans Longitudinal Studies Cerebral perfusion pressure Depression (differential diagnoses) Psychiatric Status Rating Scales Spectroscopy Near-Infrared Depression business.industry Middle Aged Frontal Lobe Psychiatry and Mental health Blood pressure Frontal lobe Cohort Linear Models Multilevel Analysis Cardiology Female Independent Living business Perfusion 030217 neurology & neurosurgery |
| Zdroj: | British Journal of Psychiatry. 214:230-236 |
| ISSN: | 1472-1465 0007-1250 |
| Popis: | BackgroundDeficits in frontal lobe perfusion have been demonstrated in late-life depression; however, studies to date have generally involved small numbers, used neuroimaging rather than bedside testing and have not controlled for important covariates.AimsWe aimed to examine the association between depressive symptoms and frontal lobe perfusion during standing, in a large cohort of community-dwelling older people.MethodParticipants aged ≥50 years underwent continuous measurement of orthostatic blood pressure by finometry, and frontal lobe perfusion by near-infrared spectroscopy. Depressive symptoms were assessed by the eight-item Centre for Epidemiological Studies Depression Scale. Real-time frontal lobe cerebral oxygenation was measured by the Portalite System, detecting changes in frontal lobe perfusion and reporting a tissue saturation index score.ResultsAlmost 8% (209 out of 2616) had clinically significant depressive symptoms. Multilevel models demonstrated a significantly lower tissue saturation index in participants with depressive symptoms at both 60 and 90 s post-stand, with coefficients of −0.43 (95% CI −0.63 to −0.22) and −0.37 (95% CI −0.57 to −0.16), respectively. Controlling for relevant covariates did not significantly attenuate these associations. After addition of systolic blood pressure this association was no longer significant, suggesting lower blood pressure may modify this relationship.ConclusionsThis study demonstrates that lower frontal lobe perfusion, related to lower values of baseline systolic blood pressure, is associated with clinically significant depressive symptoms in a cohort of community-dwelling older people. Given the recognised longitudinal association between lower blood pressure and depression in older people, this may represent a potential therapeutic target for prevention of incident depression.Declaration of interestNone. |
| Databáze: | OpenAIRE |
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