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Tang F, Qiu H, Liu Y, Guo J, Huang Z, Fang S, Zhang Y, Wang S. Decreased cobalamin sensitivity and biological aging acceleration in the general population. J Nutr Health Aging 2024; 28:100262. [PMID: 38772151 DOI: 10.1016/j.jnha.2024.100262] [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: 11/30/2023] [Revised: 05/06/2024] [Accepted: 05/07/2024] [Indexed: 05/23/2024]
Abstract
BACKGROUND The evidence on the association between cobalamin (Cbl) and aging or relevant outcomes is limited and controversial. We aimed to investigate the relationships between cobalamin intake- and function-related biomarkers and biological aging. METHODS The study encompassed 22,812 participants aged 20 years and older from the National Health and Nutrition Examination Survey. A panel of biomarkers or algorithms was used to assess biological aging, including Klemera-Doubal Age Acceleration (KDMAccel), Phenotypic age acceleration (PhenoAgeAccel), telomere length, α-Klotho, and PhenoAge advancement. Weighted generalized linear regression analysis was used to assess the associations between cobalamin-intake biomarkers (serum cobalamin, cobalamin intake from food, cobalamin supplement use, serum methylmalonic acid [MMA], and homocysteine [Hcy]) and function-related biomarkers (functional cobalamin deficiency and cobalamin insensitivity index). RESULTS Among the 22,812 individuals, the weighted mean (SE) age was 48.3 (0.2) years and 48.0% were males. Unexpectedly, serum and dietary cobalamin as well as serum MMA and Hcy levels were positively associated with most indicators of biological aging. Cobalamin sensitivity was assessed by the combination of binary Cbllow/high and MMAlow/high or Hcylow/high (cutoff values: 400 pg/mL for cobalamin, 250 nmol/L for MMA, and 12.1 μmol/l for Hcy) and a newly constructed cobalamin insensitivity index (based on the multiplicative term of serum cobalamin and serum MMA or Hcy). The multivariable-adjusted β (95%CIs) of KDMAccel in the MMAlowCbllow, MMAlowCblhigh, MMAhighCbllow, and MMAhighCblhigh groups were reference, 0.27 (0.03 to 0.51), 0.85 (0.41 to 1.29), and 7.97 years (5.77 to 10.17) respectively, which were consistent for the combination of serum Hcy and cobalamin. Both cobalamin insensitivity indices were robustly associated with biological aging acceleration in a dose-response pattern (each p < 0.001). CONCLUSIONS Decreased cobalamin sensitivity but not cobalamin insufficiency might be associated with biological aging acceleration. Further studies would improve understanding of the underlying mechanisms between decreased cobalamin sensitivity and biological aging acceleration.
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Affiliation(s)
- Fan Tang
- Department of Cardiology, Second Affiliated Hospital of Harbin Medical University, Harbin, China; The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, National Key Laboratory of Frigid Zone Cardiovascular Diseases, Harbin, China; Department of Epidemiology and Biostatistics, School of Public Health, Jiamusi University, Jiamusi, China
| | - Hongbin Qiu
- Department of Epidemiology and Biostatistics, School of Public Health, Jiamusi University, Jiamusi, China
| | - Yan Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Jiamusi University, Jiamusi, China
| | - Junchen Guo
- Department of Cardiology, Second Affiliated Hospital of Harbin Medical University, Harbin, China; The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, National Key Laboratory of Frigid Zone Cardiovascular Diseases, Harbin, China
| | - Zheming Huang
- Department of Epidemiology and Biostatistics, School of Public Health, Jiamusi University, Jiamusi, China
| | - Shaohong Fang
- Department of Cardiology, Second Affiliated Hospital of Harbin Medical University, Harbin, China; The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, National Key Laboratory of Frigid Zone Cardiovascular Diseases, Harbin, China
| | - Yiying Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Jiamusi University, Jiamusi, China.
| | - Shanjie Wang
- Department of Cardiology, Second Affiliated Hospital of Harbin Medical University, Harbin, China; The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, National Key Laboratory of Frigid Zone Cardiovascular Diseases, Harbin, China.
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Wang Y, Wu M, Xiang L, Liu S, Luo G, Lin Q, Xiao L. Association of Dietary Vitamin C Consumption with Serum Klotho Concentrations. Foods 2023; 12:4230. [PMID: 38231677 DOI: 10.3390/foods12234230] [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: 08/30/2023] [Revised: 11/03/2023] [Accepted: 11/21/2023] [Indexed: 01/19/2024] Open
Abstract
BACKGROUND Klotho is widely recognized as a protein that combats aging and possesses antioxidative characteristics, which have been implicated in the pathophysiology of numerous diseases. There is emerging evidence suggesting that the consumption of dietary nutrients, particularly those rich in antioxidants, could be associated with serum Klotho concentrations. Dietary vitamin C is one of the critical nutrients that possesses antioxidant properties. Nonetheless, the association between dietary vitamin C consumption and serum Klotho concentrations remains unclear. OBJECTIVE Aiming to evaluate the relationship between serum Klotho concentrations and dietary vitamin C consumption among Americans aged 40 to 79, we conducted a population-based study. METHODS From the National Health and Nutrition Examination Survey (NHANES) conducted between 2007 and 2016, a grand total of 11,282 individuals who met the criteria were selected as eligible participants for the study. Serum Klotho concentrations were measured using an ELISA kit that is commercially available. Trained interviewers evaluated the consumption of dietary vitamin C in the diet through a 24-hour dietary recall technique. A generalized linear model was used to evaluate the correlation between the consumption of dietary vitamin C in the diet and serum Klotho concentrations. Further examination was conducted using restricted cubic spline (RCS) analysis to explore the non-linear correlation between dietary vitamin C consumption in the diet and serum Klotho concentrations. RESULTS After accounting for possible confounding factors, serum Klotho concentrations rose by 1.17% (95% confidence interval (CI): 0.37%, 1.99%) with every standard deviation (SD) rise in dietary vitamin C consumption. With the first quintile of dietary vitamin C consumption as a reference, the percentage change of serum Klotho concentrations in the fifth quintile of dietary vitamin C consumption was 3.66% higher (95% CI: 1.05%, 6.32%). In older, normal-weight, and male participants, the subgroup analysis revealed a stronger correlation between dietary vitamin C consumption and serum Klotho concentrations. Analysis of RCS showed a linear positive association between dietary vitamin C consumption and the levels of serum Klotho concentrations. CONCLUSION The findings of this research indicate a strong and positive correlation between dietary vitamin C consumption and serum Klotho concentrations among the general adult population in the United States. Further studies are needed to validate the present findings and to explore specific mechanisms.
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Affiliation(s)
- Yan Wang
- Xiangya School of Public Health, Central South University, Changsha 410078, China
| | - Mingyang Wu
- Xiangya School of Public Health, Central South University, Changsha 410078, China
| | - Lu Xiang
- Xiangya School of Public Health, Central South University, Changsha 410078, China
| | - Si Liu
- Xiangya School of Public Health, Central South University, Changsha 410078, China
| | - Gang Luo
- Xiangya School of Public Health, Central South University, Changsha 410078, China
| | - Qian Lin
- Xiangya School of Public Health, Central South University, Changsha 410078, China
| | - Lin Xiao
- Xiangya School of Public Health, Central South University, Changsha 410078, China
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An C, Chen X, Zheng D. Association between anemia and serum Klotho in middle-aged and older adults. BMC Nephrol 2023; 24:38. [PMID: 36797683 PMCID: PMC9933285 DOI: 10.1186/s12882-023-03081-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 02/06/2023] [Indexed: 02/18/2023] Open
Abstract
BACKGROUND The role of Klotho as a multifunctional protein in anemia is unclear. This study aimed to determine the association between anemia and serum Klotho concentrations in middle-aged and elderly populations. METHODS In this cross-sectional study, we used data collected from the National Health and Nutrition Examination Survey (NHANES) 2007-2016. A total of 13,357 individuals who received serum Klotho measurements, biochemical tests, and demographic surveys were analyzed. Multivariate linear regression models adjusting for covariates were used to investigate the associations between anemia and serum Klotho. RESULTS Multivariable regression showed that serum Klotho correlates positively with hemoglobin and red blood cells and inversely with red cell distribution width. After adjusting for all covariates, compared with Q4, there was a significantly increased risk of anemia in serum Klotho quartiles 1 to 2 (OR=1.54, 95% CI:1.21-1.95, P=0.002; OR=1.30, 95% CI:1.02-1.64, P=0.042,respectively). Segmented regression showed that for every 100 pg/mL increase in serum Klotho <9.746 pg/mL, the risk of anemia was reduced by 10.9%, and this reduction was significant (P<0.001). Furthermore, stratified analyses yielded a stronger association between reduced anemia and high levels of Klotho in men and those with diabetes (P< 0.05 for interaction). However, this association was not found to be significantly altered by chronic kidney disease. CONCLUSIONS In summary, we indicated that low serum Klotho is associated with an increased likelihood of anemia using a nationally representative sample of middle-aged and older adults.
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Affiliation(s)
- Chencheng An
- grid.440299.2Department of Nephrology, Huai’an Hospital Affiliated to Xuzhou Medical University and Huai’an Second People’s Hospital, Huaian, 223002 Jiangsu China
| | - Xiaoling Chen
- grid.440299.2Department of Nephrology, Huai’an Hospital Affiliated to Xuzhou Medical University and Huai’an Second People’s Hospital, Huaian, 223002 Jiangsu China
| | - Donghui Zheng
- Department of Nephrology, Huai'an Hospital Affiliated to Xuzhou Medical University and Huai'an Second People's Hospital, Huaian, 223002, Jiangsu, China.
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