scholarly journals Corrigendum: A Pilot Study on the Cutoff Value of Related Brain Metabolite in Chinese Elderly Patients With Mild Cognitive Impairment Using MRS

2021 ◽  
Vol 13 ◽  
Author(s):  
Lihua Zhao ◽  
Jinlong Teng ◽  
Wei Mai ◽  
Jiahui Su ◽  
Bihan Yu ◽  
...  
Keyword(s):  
Cognitive Impairment ◽  
Mild Cognitive Impairment ◽  
Pilot Study ◽  
Elderly Patients ◽  
Chinese Elderly ◽  
Cutoff Value ◽  
Brain Metabolite

scholarly journals A Pilot Study on the Cutoff Value of Related Brain Metabolite in Chinese Elderly Patients With Mild Cognitive Impairment Using MRS

2021 ◽  
Vol 13 ◽  
Author(s):  
Lihua Zhao ◽  
Jinlong Teng ◽  
Wei Mai ◽  
Jiahui Su ◽  
Bihan Yu ◽  
...  
Keyword(s):  
Cognitive Impairment ◽  
Mild Cognitive Impairment ◽  
Elderly Patients ◽  
Cutoff Point ◽  
Youden Index ◽  
Resonance Spectroscopy ◽  
Cutoff Value ◽  
Brain Metabolite ◽  
Significant Difference ◽  
The Right

Objective: This cross-sectional study aimed to distinguish patients with mild cognitive impairment (MCI) from patients with normal controls (NCs) by measuring the levels of N-acetyl aspartate (NAA), total creatinine (tCr), and choline (Cho) in their hippocampus (HIP) and their posterior cingulate gyrus (PCG) by using proton magnetic resonance spectroscopy (MRS) and to predict the cutoff value on the ratios of metabolites. We further aimed to provide a reference for the diagnosis of MCI in elderly patients in China.Methods: About 69 patients who underwent a clinical diagnosis of the MCI group and 67 patients with NCs, the Mini-Mental Status Examination (MMSE) score, the Montreal Cognitive Assessment (MoCA) score, and MRS of the bilateral HIP and bilateral PCG were considered. The ratio of NAA/tCr and Cho/tCr in the bilateral HIP and bilateral PCG was calculated. The relationship between the ratios of metabolites and the scores of MMSE and MoCA was analyzed, and the possible brain metabolite cutoff point for the diagnosis of MCI was evaluated.Results: Compared with the NC group, the scores of MMSE and MoCA in the MCI group decreased significantly (p < 0.05); the ratio of NAA/tCr in the bilateral HIP and bilateral PCG and the ratio of Cho/tCr at the right HIP in the MCI group decreased significantly (p < 0.05); however, there was no significant difference in the ratio of Cho/tCr in the left HIP and bilateral PCG between the two groups (p > 0.05). The correlation coefficient between MMSE/MoCA and the ratio of NAA/tCr was 0.49–0.56 in the bilateral HIP (p < 0.01). The best cutoff value of NAA/creatine (Cr) in the left HIP and the right HIP was 1.195 and 1.19. Sensitivity, specificity, and the Youden index (YDI) in the left HIP and the right HIP were (0.725, 0.803, 0.528) and (0.754, 0.803, 0.557), respectively.Conclusion: The level of metabolites in the HIP and the PCG of patients with MCI and of those with normal subjects has a certain correlation with the score of their MMSE and MoCA. When the value of NAA/tCr in the left HIP and right HIP is <1.19, it suggests that MCI may have occurred. According to this cutoff point, elderly patients with MCI in China could be screened.

scholarly journals Intermittent Hypoxia Training for Treating Mild Cognitive Impairment: A Pilot Study

2020 ◽  
Vol 35 ◽  
pp. 153331751989672 ◽  
Author(s):  
Hong Wang ◽  
Xiangrong Shi ◽  
Hannah Schenck ◽  
James R. Hall ◽  
Sarah E. Ross ◽  
...  
Keyword(s):  
Cognitive Impairment ◽  
Mild Cognitive Impairment ◽  
Pilot Study ◽  
Elderly Patients ◽  
Intermittent Hypoxia ◽  
Short Term Memory ◽  
Cerebral Oxygenation ◽  
Word Association ◽  
Digit Span ◽  
Verbal Learning

Although intermittent hypoxia training (IHT) has proven effective against various clinical disorders, its impact on mild cognitive impairment (MCI) is unknown. This pilot study examined IHT’s safety and therapeutic efficacy in elderly patients with amnestic MCI (aMCI). Seven patients with aMCI (age 69 ± 3 years) alternately breathed 10% O2 and room-air, each 5 minutes, for 8 cycles/session, 3 sessions/wk for 8 weeks. The patients’ resting arterial pressures fell by 5 to 7 mm Hg ( P < .05) and cerebral tissue oxygenation increased ( P < .05) following IHT. Intermittent hypoxia training enhanced hypoxemia-induced cerebral vasodilation ( P < .05) and improved mini-mental state examination and digit span scores from 25.7 ± 0.4 to 27.7 ± 0.6 ( P = .038) and from 24.7 ± 1.2 to 26.1 ± 1.3 ( P = .047), respectively. California verbal learning test score tended to increase ( P = .102), but trail making test-B and controlled oral word association test scores were unchanged. Adaptation to moderate IHT may enhance cerebral oxygenation and hypoxia-induced cerebrovasodilation while improving short-term memory and attention in elderly patients with aMCI.

scholarly journals The Effect of the Feuerstein Project on the Cognitive and Functional State of Community-Dwelling Individuals Aged 65 Years and Older with Mild Cognitive Impairment: A Pilot Study

2020 ◽  
pp. 135-142
Author(s):  
Uty Ostrei ◽  
Dikla Efrati-Chomsky ◽  
Ariela Zur ◽  
Yael Robes-Alkalay ◽  
Ayala Nave ◽  
...  
Keyword(s):  
Cognitive Impairment ◽  
Mild Cognitive Impairment ◽  
Pilot Study ◽  
Elderly Patients ◽  
Functional State ◽  
Self Efficacy ◽  
Cognitive Skills ◽  
Sense Of Self ◽  
Age Groups ◽  
Community Dwelling

<b><i>Background:</i></b> The rate of elderly individuals with mild cognitive impairment (MCI) has increased over recent decades. The Feuerstein Instrumental Enrichment (FIE) program for the elderly has been shown to be effective in various age groups but is has never been tested as a treatment for MCI in elderly patients. The aim of this study was to assess the effect of the FIE on the cognitive and functional state of elderly patients with MCI. <b><i>Methods:</i></b> This was an interventional pilot study in community-dwelling patients aged ≥65 years diagnosed with MCI in the previous year. The protocol included 30 twice-weekly 90-min sessions with a full neurocognitive evaluation prior to the intervention (v1), at its conclusion (v2), and half a year later (v3). <b><i>Results:</i></b> Nine of the 15 recruited participants completed the study. The mean age was 76.2 years. Compared to v1 and v2, the only significant improvements found at v3 were in the “visual perception” subtest of the NeuroTrax test and the total score of the MOCA test (<i>p</i> = 0.048 and 0.028, respectively). The effect size was &#x3e;0.7 (<i>r</i> = 0.7), indicating a moderate-to-high clinical significance. The results of the qualitative questionnaire were consistent with the positive effect of the group on the fostering of social ties, the motivation to learn, the cognitive contribution, and the development of a sense of self-efficacy. <b><i>Conclusion:</i></b> The study findings support the conclusion that an intervention with a focus on cognitive exercising can promote a feeling of self-efficacy and preserve some cognitive skills.

Role of Inflammatory Markers in Elderly Type 2 Diabetic Patients with Mild Cognitive Impairment

2019 ◽  
Vol 15 (3) ◽  
pp. 247-253 ◽  
Author(s):  
Salwa S. Hosny ◽  
Ahmed M. Bahaaeldin ◽  
Mohamed S. Khater ◽  
Meram M. Bekhet ◽  
Hayam A. Hebah ◽  
...  
Keyword(s):  
Cognitive Impairment ◽  
Mild Cognitive Impairment ◽  
Elderly Patients ◽  
Vascular Disease ◽  
Plasma Glucose ◽  
Serum Levels ◽  
Diabetic Patients ◽  
Hs Crp ◽  
And Control

<P>Background: Type 2 diabetes (T2DM) is a risk factor for Alzheimer’s disease and mild cognitive impairment. The etiology of cognitive impairment in people with T2DM is uncertain but, chronic hyperglycemia, cerebral micro vascular disease, severe hypoglycemia, and increased prevalence of macro vascular disease are implicated. </P><P> Objectives: To determine the serum levels of soluble vascular adhesion molecule (sVCAM-1) and highly sensitive C-reactive protein (hs-CRP) in elderly type 2 diabetics with mild cognitive impairment (MCI). Methods: Our study was conducted on 90 elderly subjects (aged 60 years old or more). They were divided into Group І, 30 patients with T2DM and mild cognitive impairment, group ІІ, 30 patients with T2DM without cognitive impairment and group III, 30 healthy subjects as a control group. They were subjected to history taking, full clinical examination, anthropometric measurement, the Addenbrooke’s Cognitive Examination III (ACE---III 2012), Fasting plasma glucose, 2 hours plasma glucose, HbA1c, lipid profile, protein/creatinine ratio, serum sVCAM-1 and hs-CRP. Results: Serum levels of sVCAM-1 in diabetic elderly patients with MCI were significantly higher (946.7 ± 162.01 ng/ml) than diabetic elderly patients without cognitive impairment (479.06 ± 65.27 ng/ml) and control (263.7 ± 72.05 ng/ml) with (P=0.002). Serum levels of Hs-CRP in diabetic elderly patients with MCI were significantly higher than as diabetic elderly patients without cognitive impairment and control with (P=0.005). Conclusion: Elderly diabetic patients with mild cognitive impairment have higher levels of soluble adhesion molecules and markers of low-grade systemic inflammation than other groups.</P>

scholarly journals The Prevalence of Mild Cognitive Impairment among Chinese People: A Meta-Analysis

2021 ◽  
Vol 55 (2) ◽  
pp. 79-91
Author(s):  
Yan Deng ◽  
Siqi Zhao ◽  
Guangwen Cheng ◽  
Jiajia Yang ◽  
Benchao Li ◽  
...  
Keyword(s):  
Cognitive Impairment ◽  
Mild Cognitive Impairment ◽  
Diagnostic Criteria ◽  
Meta Analysis ◽  
Random Effect ◽  
Random Effect Model ◽  
Internal Validity ◽  
Screening Tools ◽  
Chinese Elderly ◽  
Pooled Prevalence

<b><i>Background:</i></b> Mild cognitive impairment (MCI) induced the majority number of dementia patients. The prevalence of MCI in China varied across studies with different screening tools and diagnostic criteria. <b><i>Objective:</i></b> A systematic review and meta-analysis was conducted to estimate the pooled MCI prevalence among the population aged 55 years and older in China. <b><i>Methods:</i></b> PubMed, EMBASE, CNKI, Wanfang, CQVIP, and CBMdisc were searched for studies on prevalence of MCI among Chinese elderly between January 1, 1980, and February 10, 2020. The quality assessment was conducted via external validity, internal validity, and informativity, the pooled prevalence was calculated through the random-effect model, and the homogeneity was evaluated by Cochran’s <i>Q</i> test and <i>I</i><sup>2</sup>. <b><i>Results:</i></b> Fifty-three studies with 123,766 subjects were included. The pooled prevalence of MCI among Chinese elderly was 15.4% (95% CI: 13.5–17.4%). Subgroup analyses indicated that the prevalence calculated with different screening tools was 20.2% (95% CI: 15.1–25.9%) for Montreal Cognitive Assessment (MoCA) and 13.0% (95% CI: 10.7–15.5%) for Mini-Mental State Examination (MMSE). According to different diagnostic criteria, the prevalence was 14.8% (95% CI: 12.2–17.6%) for Petersen criteria, 15.0% (95% CI: 12.7–17.5%) for DSM-IV, and 21.2% (95% CI: 17.5–25.2%) for Chinese Expert Consensus on Cognitive Impairment (CECCI). Besides, women, older adults, illiterate people, rural residents, and those who lived with unhealthy lifestyles and morbidity showed higher prevalence. <b><i>Conclusions:</i></b> The prevalence of MCI in China was 15.4%, which varied by demographics, lifestyles, morbidity, screening tools, and diagnostic criteria. In further studies, screening tools and diagnosis criteria should be considered when estimating MCI prevalence.

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