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Huang Y, Zhang R, Hong X, Liu S, Zhang S, Guo M, Shi L, Li Z, Liu Y. Correlation between sarcopenia index and cognitive function in older adult women: A cross-sectional study using NHANES data. J Clin Neurosci 2024; 122:73-79. [PMID: 38489954 DOI: 10.1016/j.jocn.2024.02.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Revised: 02/06/2024] [Accepted: 02/27/2024] [Indexed: 03/17/2024]
Abstract
OBJECTIVES The Sarcopenia Index (SI) has the potential as a biomarker for sarcopenia, which is characterized by muscle loss. There is a clear association between sarcopenia and cognitive impairment. However, the relationship between SI and cognitive impairment is yet to be fully understood. METHODS We employed data extracted from the U.S. National Health and Nutrition Examination Survey (NHANES) spanning the years 1999 to 2002. Our study encompassed individuals aged 65 to 80 who possessed accessible information regarding both SI and cognitive evaluations with a GFR ≥ 90. Cognitive function was assessed using the digit symbol substitution test (DSST). SI was calculated by serum creatinine (mg/dL)/cystatin C (mg/L)*100. Employing multivariate modeling, we estimated the connection between SI and cognitive performance. Furthermore, to enhance the reliability of our data analysis, we categorized SI using tertiles and subsequently calculated the P-value for trend. RESULTS After adjustment for potential confounders, we found SI was significantly and positively correlated with cognitive function scores both in older female in the American population [β = 0.160, 95 % confidence interval (CI) 0.050 to 0.271, P = 0.00461]. Similarly, when the total cognitive function score was treated as a categorical variable according to tertiles, higher SI was related to better total cognitive function scores in females [odds ratio (OR) = 3.968, 95 % CI 1.863 to 6.073, P = 0.00025] following adjustment for confounders. CONCLUSIONS Higher SI was correlated with a lower prevalence of cognitive impairment among older adult women with normal kidney function.
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Affiliation(s)
- Yajuan Huang
- Department of Nephrology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; Key Laboratory of Human Microbiome and Chronic Diseases (Sun Yat-sen University), Ministry of Education, Guangzhou, China; Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Rui Zhang
- Department of Nephrology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; Key Laboratory of Human Microbiome and Chronic Diseases (Sun Yat-sen University), Ministry of Education, Guangzhou, China; Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xinyang Hong
- Key Laboratory of Human Microbiome and Chronic Diseases (Sun Yat-sen University), Ministry of Education, Guangzhou, China; Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; Department of Neurology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Shunjie Liu
- Key Laboratory of Human Microbiome and Chronic Diseases (Sun Yat-sen University), Ministry of Education, Guangzhou, China; Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; Department of Neurology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Su Zhang
- Key Laboratory of Human Microbiome and Chronic Diseases (Sun Yat-sen University), Ministry of Education, Guangzhou, China; Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; Department of Neurology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Mengxia Guo
- Key Laboratory of Human Microbiome and Chronic Diseases (Sun Yat-sen University), Ministry of Education, Guangzhou, China; Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; Department of Neurology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Lishuo Shi
- Key Laboratory of Human Microbiome and Chronic Diseases (Sun Yat-sen University), Ministry of Education, Guangzhou, China; Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; Center for Clinical Research, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zhong Li
- Key Laboratory of Human Microbiome and Chronic Diseases (Sun Yat-sen University), Ministry of Education, Guangzhou, China; Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; Department of Neurology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; Shenzhen Research Institute of Sun Yat-Sen University, Hi-tech Industrial Park, Nanshan District, Shenzhen, China; Guangdong Provincal Key Laboratory of Brain Function and Disease, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.
| | - Yunyun Liu
- Key Laboratory of Human Microbiome and Chronic Diseases (Sun Yat-sen University), Ministry of Education, Guangzhou, China; Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; Department of Neurology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.
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Poskotinova L, Kontsevaya A, Kudryavtsev AV. The Association between Kidney Function Biomarkers and Delayed Memory Impairments among Older Adults in the European North of Russia. Brain Sci 2023; 13:1664. [PMID: 38137112 PMCID: PMC10742109 DOI: 10.3390/brainsci13121664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 11/18/2023] [Accepted: 11/27/2023] [Indexed: 12/24/2023] Open
Abstract
The prevention of memory decline requires better knowledge of biological markers. We studied the associations between kidney function biomarkers and memory decline (assessed with the Mini-Mental State Examination-MMSE) in elderly individuals without dementia (MMSE 24-30, age 60-74 years, n = 643, Arkhangelsk, Russia). Participants were divided by sex and into three groups according to the delayed memory performance: recall of 0-1, 2, and 3 out of 3 words. The median of serum creatinine was 82 μmol/L in men who recalled 2 words and both medians in those recalling 3 and 0-1 words were 87 μmol/L. The 90th percentile for creatinine in men recalling 0-1 words (115.0 μmol/L) exceeded the upper limit of the normal range (110.5 μmol/L), while those who recalled 3 and 2 words had 90th percentiles within the normal range (109 and 101 μmol/L, respectively). Glomerular filtration rates were normal (≥60 mL/min/1.73 m2) with a median of 92.0 mL/min/1.73 m2 in men who recalled 2 words, 84.4 and 84.9 mL/min/1.73 m2 in men who recalled 3 and 0-1 words, respectively. None of these associations were observed in women. A reduced serum creatinine in older non-demented men may indicate the initial stages of memory decline, while the increased creatinine may reflect further stages of memory impairment.
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Affiliation(s)
- Liliya Poskotinova
- Biorhythmology Laboratory of the Institute of Environmental Physiology, N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, 163001 Arkhangelsk, Russia;
- Central Scientific Research Laboratory, Northern State Medical University, 163069 Arkhangelsk, Russia
| | - Anna Kontsevaya
- Department of Public Health, National Medical Research Centre for Therapy and Preventive Medicine, 101000 Moscow, Russia;
| | - Alexander V. Kudryavtsev
- Central Scientific Research Laboratory, Northern State Medical University, 163069 Arkhangelsk, Russia
- Department of Community Medicine, UiT The Arctic University of Norway, N-9037 Tromsø, Norway
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