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Orihashi R, Imamura Y, Mizoguchi Y. Association between sTREM2, an immune biomarker of microglial activation, and frontal lobe function in community-dwelling older adults: a cross-sectional study. J Rural Med 2024; 19:186-191. [PMID: 38975040 PMCID: PMC11222625 DOI: 10.2185/jrm.2024-018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Accepted: 04/30/2024] [Indexed: 07/09/2024] Open
Abstract
Objective: Identifying the peripheral biomarkers related to the prevention or modification of unhealthy mental conditions in older adults is extremely beneficial. This study aimed to evaluate the serum levels of soluble triggering receptor expressed on myeloid cells 2 (sTREM2), a soluble form of an innate immune receptor expressed on microglia, in older adults living in a rural community, and their association with cognitive function. Materials and Methods: This survey was conducted between November 2016 and September 2017 in Kurokawa-cho, Imari, Saga Prefecture, Japan, among people aged ≥65 years. Blood samples were collected from the participants for serum sTREM2 level analysis using a peptide enzyme immunoassay. The participants underwent cognitive function assessments, including the Mini-Mental State Examination, Clinical Dementia Rating, and Frontal Assessment Battery. Therefore, we examined the association between serum sTREM2 levels and cognitive function. Results: Of the 95 participants, 25 were men and 70 were women with a mean age 78.24 ± 3.85 years and 77.96 ± 5.52 years, respectively. Serum sTREM2 levels were negatively associated with Frontal Assessment Battery scores, even after adjusting for age, sex, years of education, and serum high-sensitivity C-reactive protein levels. Conclusion: Serum sTREM2 levels may be associated with frontal lobe function in adults aged ≥65 years.
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Affiliation(s)
- Ryuzo Orihashi
- Institute of Nursing, Faculty of Medicine, Saga University, Japan
- Department of Psychiatry, Faculty of Medicine, Saga University, Japan
| | - Yoshiomi Imamura
- Department of Psychiatry, Faculty of Medicine, Saga University, Japan
| | - Yoshito Mizoguchi
- Department of Psychiatry, Faculty of Medicine, Saga University, Japan
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Kunitake Y, Imamura Y, Kunitake H, Ohishi-Fukuchi J, Matsushima J, Tateishi H, Murakawa-Hirachi T, Kojima R, Sakemura Y, Kikuchi J, Shiraishi T, Takamori A, Morisaki T, Yamada S, Monji A, Mizoguchi Y. Association depressive symptoms with memory function and social capital before and during COVID-19 in community-dwelling older adults in rural Japan: A retrospective study with a longitudinal data. Int J Geriatr Psychiatry 2024; 39:e6100. [PMID: 38757879 DOI: 10.1002/gps.6100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Accepted: 05/03/2024] [Indexed: 05/18/2024]
Abstract
OBJECTIVES This study aimed to investigate the impact of memory function and social capital on depressive symptoms during the COVID-19 pandemic among older adults in rural Japan. METHODS A retrospective study with longitudinal data was conducted during COVID-19 from May 2021 to November 2021 (T2) in Kurogawa, Japan. The candidate population for this study was 145 with the following requirements: (1) older individuals aged 65 years or above who were registered in the Kurogawa study, and (2) those with previous data (from November 2016 to February 2020; T1 as pre-pandemic). Memory function was assessed using the Wechsler Memory Scale-Revised Logical Memory II delayed recall part A (LM II-DR). Depressive symptoms were assessed using the Japanese version of the 15-item Geriatric Depression Scale (GDS-15). Social capital was evaluated through civic participation, social cohesion, and reciprocity. Fear of the COVID-19 infection (FCV-19S) was evaluated. RESULTS The final analysis included 96 participants (mean age = 81.0 years, SD = 4.8) Multivariate analysis for GDS-15 score by Mixed Model Repeated Measures (MMRM) revealed significant associations between LM II-DR (β = -0.13, 95% CI: -0.21-0.05, p = 0.002) and FCV-19S during COVID-19 (β = 0.08, 95% CI: 0.01-0.15, p = 0.02) with GDS-15 score. However, civic participation, social cohesion and reciprocity were not associated with GDS-15 score. CONCLUSIONS Among older adults in rural Japan, memory function and fear of the COVID-19 infection were significantly associated with depressive symptoms in MMRM analysis. However, social capital was not associated with depressive symptoms. This highlights the need to address memory function and fear of the COVID-19 infection in interventions for older adults during crises like the COVID-19 pandemic.
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Affiliation(s)
- Yutaka Kunitake
- Department of Psychiatry, Faculty of Medicine, Saga University, Saga, Japan
| | - Yoshiomi Imamura
- Department of Psychiatry, Faculty of Medicine, Saga University, Saga, Japan
| | - Hiroko Kunitake
- Department of Psychiatry, Faculty of Medicine, Saga University, Saga, Japan
| | | | - Jun Matsushima
- Department of Psychiatry, Faculty of Medicine, Saga University, Saga, Japan
| | - Hiroshi Tateishi
- Department of Psychiatry, Faculty of Medicine, Saga University, Saga, Japan
| | | | - Ryohei Kojima
- Department of Psychiatry, Faculty of Medicine, Saga University, Saga, Japan
- Ureshino Onsen Hospital, Ureshino, Saga, Japan
| | - Yuta Sakemura
- Department of Psychiatry, Faculty of Medicine, Saga University, Saga, Japan
| | - Jun Kikuchi
- Department of Psychiatry, Faculty of Medicine, Saga University, Saga, Japan
| | - Takumi Shiraishi
- Department of Psychiatry, Faculty of Medicine, Saga University, Saga, Japan
| | - Ayako Takamori
- Clinical Research Center, Saga University Hospital, Saga, Japan
| | | | | | - Akira Monji
- Department of Psychiatry, Faculty of Medicine, Saga University, Saga, Japan
- Wakahisa Hospital, Fukuoka, Japan
| | - Yoshito Mizoguchi
- Department of Psychiatry, Faculty of Medicine, Saga University, Saga, Japan
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Tong T, Hao C, Shen J, Liu S, Yan S, Aslam MS, Chen Y, Chen W, Li J, Li Y, Zeng J, Li M, You Z, Gulizhaerkezi T, Wei S, Zhu A, Meng X. Electroacupuncture ameliorates chronic unpredictable mild stress-induced depression-like behavior and cognitive impairment through suppressing oxidative stress and neuroinflammation in rats. Brain Res Bull 2024; 206:110838. [PMID: 38123022 DOI: 10.1016/j.brainresbull.2023.110838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 11/01/2023] [Accepted: 12/05/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND Depression is associated with lowered mood, anxiety, anhedonia, cognitive impairments, and even suicidal tendencies in severe cases. Yet few studies have directed acupuncture's mechanism toward enhancing axonal repair correlated with synaptic plasticity and anti-inflammatory effects related to oxidative stress in the hippocampus. METHODS Male Sprague-Dawley (SD) rats were randomly divided into control group (CON), chronic unpredictable mild stress (CUMS) group, CUMS + electroacupuncture group (EA), and CUMS + fluoxetine group (FLX) (n = 10/group). Rats were given a 28-day treatment at the Shangxing (GV23) and Fengfu (GV16) acupoints with electroacupuncture or fluoxetine (2.1 mg/kg). RESULTS Rats exposed to CUMS induced depression-like behaviors and spatial learning-memory impairment, changed the ionized calcium binding adaptor molecule 1 (IBA-1), Vglut1, myelin basic protein (MBP), and postsynaptic density protein 95 (PSD95) level of hippocampal, increased the Nod-like receptor protein 3 (NLRP3), atypical squamous cell (ASC), Caspase level and hippocampal reactive oxygen species (ROS), and prompted the activation of Epha4-mediated signaling and an inflammatory response. Conversely, electroacupuncture administration reduced these changes and prevented depression-like behaviors and cognitive impairment. Electroacupuncture also promoted hippocampal expression of Sirtuin1(SIRT1), Nuclear factor erythroid 2-like (Nrf2), Heme oxygenase-1 (HO-1); reduced the expression of interleukin-1β (IL-1β), interleukin-18 (IL-18), and tumor necrosis factor-alpha (TNF-α); and prevented neural damage, particularly the synaptic myelin sheath, and neuroinflammation by regulating Eph receptor A4 (EphA4) in the hippocampal. CONCLUSION These results indicate that electroacupuncture prevents depression-like behaviors with cognitive impairment and synaptic and neuronal damage, probably by reducing EphA4, which mediates ROS hyperfunction and the inflammatory response.
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Affiliation(s)
- Tao Tong
- Department of Traditional Chinese Medicine, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China; Second Clinical College, Shanxi University of Traditional Chinese Medicine, Taiyuan, Shanxi, PR China.
| | - Chongyao Hao
- Second Clinical College, Shanxi University of Traditional Chinese Medicine, Taiyuan, Shanxi, PR China.
| | - Junliang Shen
- Department of Traditional Chinese Medicine, School of Medicine, Xiamen University, Xiamen, Fujian, PR China.
| | - Siyu Liu
- Longyan Hospital of Traditional Chinese Medicine of Xiamen University, Longyan, Fujian, PR China.
| | - Simin Yan
- Department of Traditional Chinese Medicine, School of Medicine, Xiamen University, Xiamen, Fujian, PR China.
| | | | - Yiping Chen
- Second Clinical College, Shanxi University of Traditional Chinese Medicine, Taiyuan, Shanxi, PR China.
| | - Wenjie Chen
- Department of Traditional Chinese Medicine, School of Medicine, Xiamen University, Xiamen, Fujian, PR China.
| | - Jianguo Li
- Second Clinical College, Shanxi University of Traditional Chinese Medicine, Taiyuan, Shanxi, PR China.
| | - Yuhan Li
- The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, PR China.
| | - Jingyu Zeng
- Department of Traditional Chinese Medicine, School of Medicine, Xiamen University, Xiamen, Fujian, PR China.
| | - Meng Li
- Second Clinical College, Shanxi University of Traditional Chinese Medicine, Taiyuan, Shanxi, PR China.
| | - Zhuoran You
- Second Clinical College, Shanxi University of Traditional Chinese Medicine, Taiyuan, Shanxi, PR China.
| | - Tuergong Gulizhaerkezi
- Department of Traditional Chinese Medicine, School of Medicine, Xiamen University, Xiamen, Fujian, PR China.
| | - Simiao Wei
- Department of Traditional Chinese Medicine, School of Medicine, Xiamen University, Xiamen, Fujian, PR China.
| | - Anning Zhu
- Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
| | - Xianjun Meng
- Department of Traditional Chinese Medicine, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China; Department of Traditional Chinese Medicine, School of Medicine, Xiamen University, Xiamen, Fujian, PR China.
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Orihashi R, Imamura Y, Yamada S, Monji A, Mizoguchi Y. Association between serum oxytocin levels and depressive state in community-dwelling older adults: A cross-sectional study. PCN REPORTS : PSYCHIATRY AND CLINICAL NEUROSCIENCES 2023; 2:e97. [PMID: 38868149 PMCID: PMC11114300 DOI: 10.1002/pcn5.97] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 04/27/2023] [Accepted: 05/01/2023] [Indexed: 06/14/2024]
Abstract
Aim Identifying peripheral biomarkers related to the prevention or modification of unhealthy mental conditions in older adults would be extremely beneficial. This study aimed to evaluate serum oxytocin levels in older adults living in a rural community and their association with cognitive function, anxiety, depressive state, and well-being. Methods This survey was conducted between November 2016 and September 2017 in Kurokawa-cho, Imari, Saga Prefecture, Japan, among people aged ≥65 years. Blood samples were collected from the participants for serum oxytocin level analysis, which was performed using peptide enzyme immunoassay. Participants underwent neuropsychological assessments, including the Mini-Mental State Examination, Clinical Dementia Rating, Frontal Assessment Battery, State-Trait Anxiety Inventory, 15-item Geriatric Depression Scale, and 17-item Philadelphia Geriatric Center Morale Scale. We examined the association between serum oxytocin levels and neuropsychological assessment results. Results Out of 94 participants, 25 were men and 69 were women, with mean ages of 78.24 ± 3.85 years and 78.10 ± 5.43 years, respectively. Serum oxytocin levels were negatively associated with 15-item Geriatric Depression Scale scores. Additionally, nondepressive state/depressive state was classified by the 15-item Geriatric Depression Scale (cut-off 5/6). Logistic regression analysis showed that higher serum oxytocin levels tended to be associated with a less depressive state at that time. Conclusions Serum oxytocin levels may be associated with depressive state in adults aged ≥65 years.
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Affiliation(s)
- Ryuzo Orihashi
- School of Nursing, Faculty of Medicine, Oita UniversityOitaJapan
- Department of PsychiatryFaculty of Medicine, Saga UniversitySagaJapan
| | - Yoshiomi Imamura
- Department of PsychiatryFaculty of Medicine, Saga UniversitySagaJapan
- Institute of Comparative Studies of International Cultures and Societies, Kurume UniversityKurumeJapan
| | | | - Akira Monji
- Department of PsychiatryFaculty of Medicine, Saga UniversitySagaJapan
| | - Yoshito Mizoguchi
- Department of PsychiatryFaculty of Medicine, Saga UniversitySagaJapan
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Tateishi H, Matsushima J, Kunitake H, Imamura Y, Kunitake Y, Murakawa T, Mawatari S, Kojima R, Fujii Y, Kikuchi J, Fukuchi J, Sakemura Y, Shiraishi T, Nagahama C, Maekawa T, Asami T, Mizoguchi Y, Monji A. Serum soluble triggering receptor expressed on myeloid cells-2 was not altered by rTMS in patients with treatment-resistant depression. Neuropsychopharmacol Rep 2023; 43:222-227. [PMID: 36907597 PMCID: PMC10275288 DOI: 10.1002/npr2.12332] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 02/21/2023] [Accepted: 02/27/2023] [Indexed: 03/14/2023] Open
Abstract
AIM Repetitive transcranial magnetic stimulation (rTMS) is one of the most effective and minimally invasive treatments for treatment-resistant depression (TRD). However, the mechanism underlying the therapeutic effects of rTMS in patients with TRD remains unclear. In recent years, the pathogenesis of depression has been closely associated with chronic inflammation and microglia are believed to play an important role in chronic inflammation. Triggering receptor expressed on myeloid cells-2 (TREM2) plays an important role in microglial neuroinflammatory regulation. In this study, we investigated the changes in peripheral soluble TREM2 (sTREM2) before and after rTMS treatment in patients with TRD. METHODS Twenty-six patients with TRD were enrolled in this frequency (10 Hz) rTMS study. Depressive symptoms, cognitive function, and serum sTREM2 concentrations were measured at baseline and the end of the 6-week rTMS treatment. RESULTS This study showed that rTMS ameliorated depressive symptoms and partially improved cognitive dysfunction in TRD. However, rTMS treatment did not alter serum sTREM2 levels. CONCLUSIONS This is the first sTREM2 study in patients with TRD who underwent rTMS treatment. These results suggest that serum sTREM2 may not be relevant for the mechanism underlying the therapeutic effect of rTMS in patients with TRD. Future studies should confirm the present findings using a larger patient sample and a sham rTMS procedure, as well as CSF sTREM2. Furthermore, a longitudinal study should be conducted to clarify the effects of rTMS on sTREM2 levels.
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Affiliation(s)
- Hiroshi Tateishi
- Department of Psychiatry, Faculty of MedicineSaga UniversitySagaJapan
| | - Jun Matsushima
- Department of Psychiatry, Faculty of MedicineSaga UniversitySagaJapan
| | - Hiroko Kunitake
- Department of Psychiatry, Faculty of MedicineSaga UniversitySagaJapan
| | - Yoshiomi Imamura
- Department of Psychiatry, Faculty of MedicineSaga UniversitySagaJapan
| | - Yutaka Kunitake
- Department of Psychiatry, Faculty of MedicineSaga UniversitySagaJapan
| | - Toru Murakawa
- Department of Psychiatry, Faculty of MedicineSaga UniversitySagaJapan
| | - Seiji Mawatari
- Department of Psychiatry, Faculty of MedicineSaga UniversitySagaJapan
| | - Ryohei Kojima
- Department of Psychiatry, Faculty of MedicineSaga UniversitySagaJapan
| | - Yuka Fujii
- Department of Psychiatry, Faculty of MedicineSaga UniversitySagaJapan
| | - Jun Kikuchi
- Department of Psychiatry, Faculty of MedicineSaga UniversitySagaJapan
| | - Junko Fukuchi
- Department of Psychiatry, Faculty of MedicineSaga UniversitySagaJapan
| | - Yuta Sakemura
- Department of Psychiatry, Faculty of MedicineSaga UniversitySagaJapan
| | - Takumi Shiraishi
- Department of Psychiatry, Faculty of MedicineSaga UniversitySagaJapan
| | - Chika Nagahama
- Department of Psychiatry, Faculty of MedicineSaga UniversitySagaJapan
| | - Toshihiko Maekawa
- Department of Neuropsychiatry, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Toyoko Asami
- Department of Rehabilitation MedicineSaga University HospitalSagaJapan
| | - Yoshito Mizoguchi
- Department of Psychiatry, Faculty of MedicineSaga UniversitySagaJapan
| | - Akira Monji
- Department of Psychiatry, Faculty of MedicineSaga UniversitySagaJapan
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Ohishi-Fukuchi J, Imamura Y, Orihashi R, Kunitake H, Kunitake Y, Tateishi H, Yamada S, Monji A, Mizoguchi Y. Salivary 3-methoxy-4-hydroxyphenylglycol and MRI-based volume change of the precuneus in community-dwelling elderly people. Psychogeriatrics 2023. [PMID: 37248036 DOI: 10.1111/psyg.12976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 04/29/2023] [Accepted: 05/08/2023] [Indexed: 05/31/2023]
Abstract
BACKGROUND The noradrenergic systems in the brain maintain cognitive functions including attention/concentration and establishment of long-term memory. In addition, hypofunction of noradrenergic systems is supposed to be involved in the pathophysiology of Alzheimer's disease. In this study, we tried to examine the possible associations of concentrations of basal salivary 3-methoxy-4-hydroxyphenylglycol (sMHPG), a major metabolite of noradrenaline, and brain volume changes during 4 years in elderly people living in a rural community. METHODS The survey was conducted twice in Kurokawa-cho, Imari, Saga Prefecture, Japan, among people aged 65 years and older. We collected data from 226 residents. Measurements of sMHPG and brain MRIs were collected at Time 1 (2005-2007). Follow-up brain MRIs were taken at Time 2 (2009-2011). A total of 70 participants (18 men, mean age 71.9 ± 4.8 years; 52 women, mean age 72.0 ± 4.3 years) completed this survey. Concentrations of sMHPG at baseline were divided into two groups using the mean value (12.83 ng/ml). We compared the brain volumes between groups with higher and lower sMHPG concentrations over time using voxel-based morphometry implemented with statistical parametric mapping. RESULTS In participants with higher sMHPG concentrations at baseline, brain volumes including right precuneus were significantly larger 4 years after baseline than those with lower sMHPG concentrations at baseline. No interaction between sMHPG concentration and MRI acquisition interval was found. CONCLUSION Our results suggest that higher sMHPG concentrations in elderly people might be associated with maintenance of brain volume, especially in brain regions closely related to cognitive function.
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Affiliation(s)
| | - Yoshiomi Imamura
- Department of Psychiatry, Faculty of Medicine, Saga University, Saga, Japan
| | - Ryuzo Orihashi
- Department of Psychiatry, Faculty of Medicine, Saga University, Saga, Japan
- School of Nursing, Faculty of Medicine, Oita University, Yufu, Japan
| | - Hiroko Kunitake
- Department of Psychiatry, Faculty of Medicine, Saga University, Saga, Japan
| | - Yutaka Kunitake
- Department of Psychiatry, Faculty of Medicine, Saga University, Saga, Japan
| | - Hiroshi Tateishi
- Department of Psychiatry, Faculty of Medicine, Saga University, Saga, Japan
| | | | - Akira Monji
- Department of Psychiatry, Faculty of Medicine, Saga University, Saga, Japan
| | - Yoshito Mizoguchi
- Department of Psychiatry, Faculty of Medicine, Saga University, Saga, Japan
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Association between cortisol and aging-related hippocampus volume changes in community-dwelling older adults: a 7-year follow-up study. BMC Geriatr 2022; 22:765. [PMID: 36131257 PMCID: PMC9491648 DOI: 10.1186/s12877-022-03455-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 09/13/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Identifying peripheral biomarkers related to modifiable risk factors to prevent dementia at an early stage will be extremely beneficial. We have been studying how older adults can maintain their mental health and continue to live in a familiar community. The aim of this study is to investigate the association between serum cortisol levels and brain volume among older adults in rural Japan. METHODS This was a longitudinal study conducted in Kurokawa-cho, Imari, Saga Prefecture, Japan, among people aged 65 years and above, as reported previously. We conducted a survey twice. The first survey was conducted from October 2009 to March 2011 (Timepoint 1) and the second was conducted from November 2016 to September 2017 (Timepoint 2). Blood samples for serum cortisol levels analysis were collected from participants at Timepoint 1. Serum cortisol levels were measured using the enzyme-linked immunosorbent assay. The participants underwent brain MRI examinations, and Mini-Mental State Examination (MMSE) and Clinical Dementia Rating (CDR) for cognitive function assessment at Timepoint 1 and Timepoint 2. We obtained 70 participants (16 men, mean age 72.69 ± 3.18 years; 54 women, mean age 72.69 ± 4.60 years, at Timepoint 1) for analysis. Correlation analysis was performed between serum cortisol levels at baseline (Timepoint 1) and brain volume (Timepoint 1, Timepoint 2, and Timepoint 1-Timepoint 2 difference) using voxel-based morphometry method. RESULTS There was no significant difference in serum cortisol levels between men (72.32 ± 17.30 ng/ml) and women (76.60 ± 21.12 ng/ml) at baseline. Additionally, no effect of blood collection time on cortisol levels was observed in these participants. Small volume correction analysis at the cluster level by applying multiple comparison corrections (family-wise error; P < 0.05) showed a negative correlation between serum cortisol levels (Timepoint 1) and brain volume (Timepoint 2) within the region containing the left hippocampus. CONCLUSIONS Serum cortisol levels may serve as a peripheral biomarker of age-related volume changes involving the hippocampus in older adults aged 65 years and above.
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