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Liew Z, Meng Q, Yan Q, Schullehner J, Hansen B, Kristiansen SM, Voutchkova DD, Olsen J, Ersbøll AK, Ketzel M, Raaschou-Nielsen O, Ritz BR. Association Between Estimated Geocoded Residential Maternal Exposure to Lithium in Drinking Water and Risk for Autism Spectrum Disorder in Offspring in Denmark. JAMA Pediatr 2023; 177:617-624. [PMID: 37010840 PMCID: PMC10071398 DOI: 10.1001/jamapediatrics.2023.0346] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Accepted: 01/22/2023] [Indexed: 04/04/2023]
Abstract
Importance Lithium is a naturally occurring and trace element that has mood-stabilizing effects. Maternal therapeutic use of lithium has been associated with adverse birth outcomes. In animal models, lithium modulates Wnt/β-catenin signaling that is important for neurodevelopment. It is unknown whether exposure to lithium in drinking water affects brain health in early life. Objective To evaluate whether autism spectrum disorder (ASD) in offspring is associated with maternal exposure to lithium in drinking water during pregnancy. Design, Setting, and Participants This nationwide population-based case-control study in Denmark identified 8842 children diagnosed with ASD born from 2000 through 2013 and 43 864 control participants matched by birth year and sex from the Danish Medical Birth Registry. These data were analyzed from March 2021 through November 2022. Exposures Geocoded maternal residential addresses during pregnancy were linked to lithium level (range, 0.6 to 30.7 μg/L) in drinking water estimated using kriging interpolation based on 151 waterworks measurements of lithium across all regions in Denmark. Main Outcomes and Measures ASD diagnoses were ascertained using International Statistical Classification of Diseases and Related Health Problems, Tenth Revision codes recorded in the Danish Psychiatric Central Register. The study team estimated odds ratios (ORs) and 95% CIs for ASD according to estimated geocoded maternal exposure to natural source of lithium in drinking water as a continuous (per IQR) or a categorical (quartile) variable, adjusting for sociodemographic factors and ambient air pollutants levels. The study team also conducted stratified analyses by birth years, child's sex, and urbanicity. Results A total of 8842 participants with ASD (male, 7009 [79.3%]) and 43 864 control participants (male, 34 749 [79.2%]) were studied. Every IQR increase in estimated geocoded maternal exposure to natural source of lithium in drinking water was associated with higher odds for ASD in offspring (OR, 1.23; 95% CI, 1.17-1.29). Elevated odds among offspring for ASD were estimated starting from the second quartile (7.36 to 12.67 μg/L) of estimated maternal exposure to drinking water with lithium and the OR for the highest quartile (more than 16.78 μg/L) compared with the reference group (less than 7.39 μg/L) was 1.46 (95% CI, 1.35-1.59). The associations were unchanged when adjusting for air pollution exposures and no differences were apparent in stratified analyses. Conclusions and Relevance Estimated maternal prenatal exposure to lithium from naturally occurring drinking water sources in Denmark was associated with an increased ASD risk in the offspring. This study suggests that naturally occurring lithium in drinking water may be a novel environmental risk factor for ASD development that requires further scrutiny.
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Affiliation(s)
- Zeyan Liew
- Department of Environmental Health Sciences, Yale School of Public Health, New Haven, Connecticut
- Yale Center for Perinatal, Pediatric, and Environmental Epidemiology, Yale School of Public Health, New Haven, Connecticut
| | - Qi Meng
- Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles
| | - Qi Yan
- Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles
| | - Jörg Schullehner
- Geological Survey of Denmark and Greenland (GEUS), Aarhus, Denmark
- Centre for Integrated Register-based Research at Aarhus University (CIRRAU), Aarhus, Denmark
- National Centre for Register-Based Research, Aarhus University, Aarhus, Denmark
| | - Birgitte Hansen
- Geological Survey of Denmark and Greenland (GEUS), Aarhus, Denmark
| | | | | | - Jørn Olsen
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
| | - Annette Kjær Ersbøll
- National Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark
| | - Matthias Ketzel
- Department of Environmental Science, Aarhus University, Roskilde, Denmark
- Global Centre for Clean Air Research (GCARE), Department of Civil and Environmental Engineering, University of Surrey, Guildford, United Kingdom
| | - Ole Raaschou-Nielsen
- Department of Environmental Science, Aarhus University, Roskilde, Denmark
- Danish Cancer Society Research Center, Danish Cancer Society, Copenhagen, Denmark
| | - Beate R. Ritz
- Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles
- Department of Neurology, School of Medicine, University of California, Los Angeles
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Mahmudiono T, Fakhri Y, Daraei H, Mehri F, Einolghozati M, Mohamadi S, Mousavi Khaneghah A. The concentration of Lithium in water resources: A systematic review, meta-analysis and health risk assessment. REVIEWS ON ENVIRONMENTAL HEALTH 2023; 0:reveh-2023-0025. [PMID: 37261955 DOI: 10.1515/reveh-2023-0025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 05/08/2023] [Indexed: 06/03/2023]
Abstract
The presence of trace elements such as lithium (Li) in water resources in the long term can endanger consumers' health. Several studies have been conducted on Li concentration in water sources; hence, this study attempted to retrieve studies using a systematic search. The search was conducted in Web of Sciences, Embase, PubMed, and Scopus databases from 1 January 2010 to 15 January 2023. Li concentration was meta-analyzed based on the type of water resources and countries subgroups in the random effects model (REM) statistical analysis. In addition, health risk assessment in different age groups was calculated using the target hazard quotient (THQ). This study included 76 papers with 157 data reports in our meta-analysis. The overall pooled concentration of Li was 5.374 (95 % CI: 5.261-5.487 μg/L). The pooled concentration of Li in groundwater (40.407 μg/L) was 14.53 times surface water (2.785 μg/L). The highest water Li content was attributed to Mexico (2,209.05 μg/L), Bolivia (1,444.05 μg/L), Iraq (1,350 μg/L), and Argentina (516.39 μg/L). At the same time, the lowest water Li content was associated with Morocco (1.20 μg/L), Spain (0.46 μg/L), and India (0.13 μg/L). THQ due to Li in water resources in consumers of Iraq, Mexico, South Africa, Afghanistan, Bolivia, Portugal, Malawi, South Korea, Nepal, South Korea, Argentina, and the USA was higher than 1 value. Therefore, continuous monitoring of Li concentration in water sources and reducing Li concentration, especially in groundwater water, using new water treatment processes in these countries are recommended.
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Affiliation(s)
- Trias Mahmudiono
- Department of Nutrition, Faculty of Public Health, Universitas Airlangga, Surabaya, Indonesia
| | - Yadolah Fakhri
- Food Health Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Hasti Daraei
- Environmental Health Engineering Research Center, Kerman University of Medical Sciences, Kerman, Iran
- Department of Environmental Health Engineering, Faculty of Public Health, Kerman University of Medical Sciences, Kerman, Iran
| | - Fereshteh Mehri
- Nutrition Health Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Mahtab Einolghozati
- Department of Nutrition and food Safety, School of Medicine. Nutrition Health Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Sara Mohamadi
- Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Shahre-Kord University, Shahre-Kord, Iran
| | - Amin Mousavi Khaneghah
- Department of Fruit and Vegetable Product Technology, Prof. Wacław Dąbrowski Institute of Agricultural and Food Biotechnology - State Research Institute, Warsaw, Poland
- Department of Technology of Chemistry, Azerbaijan State Oil and Industry University, Baku, Azerbaijan
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Fenech RK, Hamstra SI, Finch MS, Ryan CR, Marko DM, Roy BD, Fajardo VA, MacPherson REK. Low-Dose Lithium Supplementation Influences GSK3β Activity in a Brain Region Specific Manner in C57BL6 Male Mice. J Alzheimers Dis 2023; 91:615-626. [PMID: 36463453 DOI: 10.3233/jad-220813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
BACKGROUND Lithium, a commonly used treatment for bipolar disorder, has been shown to have neuroprotective effects for other conditions including Alzheimer's disease via the inhibition of the enzyme glycogen synthase kinase-3 (GSK3). However, dose-dependent adverse effects of lithium are well-documented, highlighting the need to determine if low doses of lithium can reliably reduce GSK3 activity. OBJECTIVE The purpose of this study was to evaluate the effects of a low-dose lithium supplementation on GSK3 activity in the brain of an early, diet-induced Alzheimer's disease model. METHODS Male C57BL/6J mice were divided into either a 6-week or 12-week study. In the 6-week study, mice were fed a chow diet or a chow diet with lithium-supplemented drinking water (10 mg/kg/day) for 6 weeks. Alternatively, in the 12-week study, mice were fed a chow diet, a high-fat diet (HFD), or a HFD with lithium-supplemented drinking water for 12 weeks. Prefrontal cortex and hippocampal tissues were collected for analysis. RESULTS Results demonstrated reduced GSK3 activity in the prefrontal cortex as early as 6 weeks of lithium supplementation, in the absence of inhibitory phosphorylation changes. Further, lithium supplementation in an obese model reduced prefrontal cortex GSK3 activity as well as improved insulin sensitivity. CONCLUSION Collectively, these data provide evidence for low-dose lithium supplementation to inhibit GSK3 activity in the brain. Moreover, these results indicate that GSK3 activity can be inhibited despite any changes in phosphorylation. These findings contribute to an overall greater understanding of low-dose lithium's ability to influence GSK3 activity in the brain and its potential as an Alzheimer's disease prophylactic.
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Affiliation(s)
- Rachel K Fenech
- Department of Health Sciences, Brock University, St. Catharines, ON, Canada
| | - Sophie I Hamstra
- Department of Kinesiology, Brock University, St. Catharines, ON, Canada
| | - Michael S Finch
- Department of Health Sciences, Brock University, St. Catharines, ON, Canada
| | - Chantal R Ryan
- Department of Health Sciences, Brock University, St. Catharines, ON, Canada
| | - Daniel M Marko
- Department of Health Sciences, Brock University, St. Catharines, ON, Canada
| | - Brian D Roy
- Department of Kinesiology, Brock University, St. Catharines, ON, Canada
| | - Val A Fajardo
- Department of Kinesiology, Brock University, St. Catharines, ON, Canada
| | - Rebecca E K MacPherson
- Department of Health Sciences, Brock University, St. Catharines, ON, Canada.,Centre for Neuroscience, Brock University, St Catharines, ON, Canada
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Hamstra SI, Roy BD, Tiidus P, MacNeil AJ, Klentrou P, MacPherson RE, Fajardo VA. Beyond its Psychiatric Use: The Benefits of Low-dose Lithium Supplementation. Curr Neuropharmacol 2023; 21:891-910. [PMID: 35236261 PMCID: PMC10227915 DOI: 10.2174/1570159x20666220302151224] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/16/2022] [Accepted: 02/10/2022] [Indexed: 11/22/2022] Open
Abstract
Lithium is most well-known for its mood-stabilizing effects in the treatment of bipolar disorder. Due to its narrow therapeutic window (0.5-1.2 mM serum concentration), there is a stigma associated with lithium treatment and the adverse effects that can occur at therapeutic doses. However, several studies have indicated that doses of lithium under the predetermined therapeutic dose used in bipolar disorder treatment may have beneficial effects not only in the brain but across the body. Currently, literature shows that low-dose lithium (≤0.5 mM) may be beneficial for cardiovascular, musculoskeletal, metabolic, and cognitive function, as well as inflammatory and antioxidant processes of the aging body. There is also some evidence of low-dose lithium exerting a similar and sometimes synergistic effect on these systems. This review summarizes these findings with a focus on low-dose lithium's potential benefits on the aging process and age-related diseases of these systems, such as cardiovascular disease, osteoporosis, sarcopenia, obesity and type 2 diabetes, Alzheimer's disease, and the chronic low-grade inflammatory state known as inflammaging. Although lithium's actions have been widely studied in the brain, the study of the potential benefits of lithium, particularly at a low dose, is still relatively novel. Therefore, this review aims to provide possible mechanistic insights for future research in this field.
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Affiliation(s)
- Sophie I. Hamstra
- Department of Kinesiology, Brock University, St. Catharines, Ontario, Canada
- Centre for Bone and Muscle Health, Brock University, St. Catharines, Ontario, Canada
| | - Brian D. Roy
- Department of Kinesiology, Brock University, St. Catharines, Ontario, Canada
- Centre for Bone and Muscle Health, Brock University, St. Catharines, Ontario, Canada
| | - Peter Tiidus
- Department of Kinesiology, Brock University, St. Catharines, Ontario, Canada
| | - Adam J. MacNeil
- Department of Health Sciences, Brock University, St. Catharines, ON, Canada
| | - Panagiota Klentrou
- Department of Kinesiology, Brock University, St. Catharines, Ontario, Canada
- Centre for Bone and Muscle Health, Brock University, St. Catharines, Ontario, Canada
| | - Rebecca E.K. MacPherson
- Department of Health Sciences, Brock University, St. Catharines, ON, Canada
- Centre for Neurosciences, Brock University, St. Catharines, Ontario, Canada
| | - Val A. Fajardo
- Department of Kinesiology, Brock University, St. Catharines, Ontario, Canada
- Centre for Bone and Muscle Health, Brock University, St. Catharines, Ontario, Canada
- Centre for Neurosciences, Brock University, St. Catharines, Ontario, Canada
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Effects of Leisure-Time Physical Activity on Cognitive Reserve Biomarkers and Leisure Motivation in the Pre-Diabetes Elderly. Healthcare (Basel) 2022; 10:healthcare10040737. [PMID: 35455914 PMCID: PMC9032024 DOI: 10.3390/healthcare10040737] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/13/2022] [Accepted: 04/13/2022] [Indexed: 02/01/2023] Open
Abstract
The purpose of this study was to investigate the change in cognitive reserve biomarkers of the pre-diabetic individual according to the types of leisure-time physical activity (aerobic or resistance physical activity). The research subjects (n = 184) who participated in the survey were pre-diabetic and diabetic patients who were visiting university hospitals and welfare centers. The intervention subjects (n = 36) who were elderly females with pre-diabetes volunteered to participate in the study by performing regular physical exercise (aerobic or resistance exercise). The study participants were 65 years of age or older with pre-diabetes defined by a glycated hemoglobin (HbA1c) level of (5.7−6.4)%. All research subjects performed motivation and stress questionnaire survey. All intervention subjects participated in leisure-time physical activity (LTPA) for 12 weeks. Body composition, HbA1c, and cognitive reserve biomarkers were measured at baseline, and at 6 and 12 weeks. LTPA motivation confirmed that the LTPA participants had a high level of motivation. Stress confirmed that the stress level of LTPA participants was low. Two-way within-factor ANOVA revealed significant group × time interaction for weight (p < 0.05), BMI (p < 0.01), % fat (p < 0.001), SBP (p < 0.05), HbA1c (p < 0.001), BDNF (p < 0.001), and Beta-Amyloid 1−42 (p < 0.001). In both physical activity groups, HbA1c (p < 0.001), NGF (p < 0.05), BDNF (p < 0.05), and Cathepsin B (p < 0.05) improved significantly at 12 weeks, compared to baseline and 6 weeks. In the resistance physical activity group, Beta-Amyloid 1−42 (p < 0.01) and Homocysteine (p < 0.05) significantly decreased at 12 weeks, compared to baseline and at 6 weeks. The LTPA showed high levels of integrated and identified regulation among leisure motive types, and the level of stress was found to be low. The LTPA is effective in reducing the HbA1c levels of the pre-diabetes elderly. In addition, the pre-diabetes elderly were found to have increased NGF, BDNF, and cathepsin B, and decreased Beta-Amyloid 1−42 and homocysteine. Regular leisure-time physical activity has a positive effect on cognitive reserve biomarkers through improving glycemic control by reducing weight and % fat in the pre-diabetes elderly.
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Więckowska-Gacek A, Mietelska-Porowska A, Wydrych M, Wojda U. Western diet as a trigger of Alzheimer's disease: From metabolic syndrome and systemic inflammation to neuroinflammation and neurodegeneration. Ageing Res Rev 2021; 70:101397. [PMID: 34214643 DOI: 10.1016/j.arr.2021.101397] [Citation(s) in RCA: 130] [Impact Index Per Article: 43.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 06/10/2021] [Accepted: 06/24/2021] [Indexed: 02/06/2023]
Abstract
An excess of saturated fatty acids and simple sugars in the diet is a known environmental risk factor of Alzheimer's disease (AD) but the holistic view of the interacting processes through which such diet may contribute to AD pathogenesis is missing. We addressed this need through extensive analysis of published studies investigating the effects of western diet (WD) on AD development in humans and laboratory animals. We reviewed WD-induced systemic alterations comprising metabolic changes, induction of obesity and adipose tissue inflammation, gut microbiota dysbiosis and acceleration of systemic low-grade inflammation. Next we provide an overview of the evidence demonstrating that WD-associated systemic alterations drive impairment of the blood-brain barrier (BBB) and development of neuroinflammation paralleled by accumulation of toxic amyloid. Later these changes are followed by dysfunction of synaptic transmission, neurodegeneration and finally memory and cognitive impairment. We conclude that WD can trigger AD by acceleration of inflammaging, and that BBB impairment induced by metabolic and systemic inflammation play the central role in this process. Moreover, the concurrence of neuroinflammation and Aβ dyshomeostasis, which by reciprocal interactions drive the vicious cycle of neurodegeneration, contradicts Aβ as the primary trigger of AD. Given that in 2019 the World Health Organization recommended focusing on modifiable risk factors in AD prevention, this overview of the sequential, complex pathomechanisms initiated by WD, which can lead from peripheral disturbances to neurodegeneration, can support future prevention strategies.
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Bagit A, Hayward GC, MacPherson REK. Exercise and estrogen: common pathways in Alzheimer's disease pathology. Am J Physiol Endocrinol Metab 2021; 321:E164-E168. [PMID: 34056921 PMCID: PMC8321825 DOI: 10.1152/ajpendo.00008.2021] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disease that is characterized by progressive declines in cognitive function. Current epidemiological data indicate significant sex-linked disparities, where females have a higher risk of developing AD compared with male counterparts. This disparity necessitates further investigations to uncover the pathological and molecular factors influencing these sex differences. Although the underlying pathways behind this observed disparity remain elusive, recent research points to menopausal estrogen loss as a potential factor. Estrogen holds a significant role in amyloid precursor protein (APP) processing and overall neuronal health through the regulation of brain-derived neurotrophic factor (BDNF), a factor that is also reduced in postmenopausal women. BDNF is a known contributor to neuronal health and its reduced expression is typically linked to AD disorders. Exercise is known to increase BDNF and may provide an accessible activity for postmenopausal women to reduce their risk of AD. This review aims to discuss the relationship between estrogen, exercise, and BDNF in AD pathology.
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Affiliation(s)
- Ahmed Bagit
- Department of Health Sciences, Brock University, St. Catharines, Ontario, Canada
| | - Grant C Hayward
- Faculty of Medicine, Ottawa University, Ottawa, Ontario, Canada
| | - Rebecca E K MacPherson
- Department of Health Sciences, Brock University, St. Catharines, Ontario, Canada
- Centre for Neuroscience, Brock University, St. Catharines, Ontario, Canada
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Baranowski BJ, Hayward GC, Marko DM, MacPherson REK. Examination of BDNF Treatment on BACE1 Activity and Acute Exercise on Brain BDNF Signaling. Front Cell Neurosci 2021; 15:665867. [PMID: 34017238 PMCID: PMC8129185 DOI: 10.3389/fncel.2021.665867] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 04/09/2021] [Indexed: 11/23/2022] Open
Abstract
Perturbations in metabolism results in the accumulation of beta-amyloid peptides, which is a pathological feature of Alzheimer’s disease. Beta-site amyloid precursor protein cleaving enzyme 1 (BACE1) is the rate limiting enzyme responsible for beta-amyloid production. Obesogenic diets increase BACE1 while exercise reduces BACE1 activity, although the mechanisms are unknown. Brain-derived neurotropic factor (BDNF) is an exercise inducible neurotrophic factor, however, it is unknown if BDNF is related to the effects of exercise on BACE1. The purpose of this study was to determine the direct effect of BDNF on BACE1 activity and to examine neuronal pathways induced by exercise. C57BL/6J male mice were assigned to either a low (n = 36) or high fat diet (n = 36) for 10 weeks. To determine the direct effect of BDNF on BACE1, a subset of mice (low fat diet = 12 and high fat diet n = 12) were used for an explant experiment where the brain tissue was directly treated with BDNF (100 ng/ml) for 30 min. To examine neuronal pathways activated with exercise, mice remained sedentary (n = 12) or underwent an acute bout of treadmill running at 15 m/min with a 5% incline for 120 min (n = 12). The prefrontal cortex and hippocampus were collected 2-h post-exercise. Direct treatment with BDNF resulted in reductions in BACE1 activity in the prefrontal cortex (p < 0.05), but not the hippocampus. The high fat diet reduced BDNF content in the hippocampus; however, the acute bout of exercise increased BDNF in the prefrontal cortex (p < 0.05). These novel findings demonstrate the region specific differences in exercise induced BDNF in lean and obese mice and show that BDNF can reduce BACE1 activity, independent of other exercise-induced alterations. This work demonstrates a previously unknown link between BDNF and BACE1 regulation.
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Affiliation(s)
| | - Grant C Hayward
- Department of Health Sciences, Brock University, St. Catharines, ON, Canada
| | - Daniel M Marko
- Department of Health Sciences, Brock University, St. Catharines, ON, Canada
| | - Rebecca E K MacPherson
- Department of Health Sciences, Brock University, St. Catharines, ON, Canada.,Centre for Neuroscience, Brock University, St. Catharines, ON, Canada
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Resveratrol, Metabolic Dysregulation, and Alzheimer's Disease: Considerations for Neurogenerative Disease. Int J Mol Sci 2021; 22:ijms22094628. [PMID: 33924876 PMCID: PMC8125227 DOI: 10.3390/ijms22094628] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/20/2021] [Accepted: 04/26/2021] [Indexed: 12/16/2022] Open
Abstract
Alzheimer’s disease (AD) has traditionally been discussed as a disease where serious cognitive decline is a result of Aβ-plaque accumulation, tau tangle formation, and neurodegeneration. Recently, it has been shown that metabolic dysregulation observed with insulin resistance and type-2 diabetes actively contributes to the progression of AD. One of the pathologies linking metabolic disease to AD is the release of inflammatory cytokines that contribute to the development of brain neuroinflammation and mitochondrial dysfunction, ultimately resulting in amyloid-beta peptide production and accumulation. Improving these metabolic impairments has been shown to be effective at reducing AD progression and improving cognitive function. The polyphenol resveratrol (RSV) improves peripheral metabolic disorders and may provide similar benefits centrally in the brain. RSV reduces inflammatory cytokine release, improves mitochondrial energetic function, and improves Aβ-peptide clearance by activating SIRT1 and AMPK. RSV has also been linked to improved cognitive function; however, the mechanisms of action are less defined. However, there is evidence to suggest that chronic RSV-driven AMPK activation may be detrimental to synaptic function and growth, which would directly impact cognition. This review will discuss the benefits and adverse effects of RSV on the brain, highlighting the major signaling pathways and some of the gaps surrounding the use of RSV as a treatment for AD.
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Li N, Xu X, Mao S, Jiang Y, Hu Y, Xing R, Chen Y, Ye J, Ling L, Zeng X, Han G. Association of dyslipidaemia with Alzheimer's disease in a cohort of postmenopausal women. J Int Med Res 2021; 48:300060520926020. [PMID: 32567449 PMCID: PMC7309399 DOI: 10.1177/0300060520926020] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Objective To evaluate the association between dyslipidaemia and Alzheimer’s disease (AD) in a cohort of postmenopausal women. Methods This retrospective study analysed data from postmenopausal women with early AD (group AD) and a cohort of healthy age- and sex-matched control subjects (group NC) that were considered to be within standard limits according to a neuropsychological assessment between March 2010 and March 2019. The primary endpoints were body mass index and lipid-related laboratory parameters, including leptin, high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), total cholesterol, adiponectin, triglycerides, apolipoprotein A1, apolipoprotein B and apolipoprotein E4, which were evaluated using multivariate binary logistic analysis. Results The study enrolled 200 postmenopausal women with early AD (mean ± SD age 69.34 ± 6.25 years) and 180 control subjects (mean ± SD age 67.48 ± 7.42 years). Lower HDL-C and higher LDL-C were risk factors for AD. A multivariate binary logistic regression model demonstrated that lower HDL-C and higher LDL-C were the only variables associated with the development of AD (odds ratio [OR] 21.14, 95% confidence interval [CI] 2.47, 4.13; OR 36.35, 95% CI 1.24, 3.38; respectively). Conclusion Both low HDL-C and high LDL-C were associated with the occurrence of AD in a cohort of postmenopausal women.
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Affiliation(s)
- Ning Li
- Department of Neurology, Affiliated Hospital of Hebei University, Baoding, Hebei Province, China
| | - Xiaoying Xu
- Department of Ophthalmology, Baoding First Central Hospital, Baoding, Hebei Province, China
| | - Shuai Mao
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong Province, China
| | - Ye Jiang
- Department of Neurology, Affiliated Hospital of Hebei University, Baoding, Hebei Province, China
| | - Yadong Hu
- Department of Neurology, Affiliated Hospital of Hebei University, Baoding, Hebei Province, China
| | - Ruowei Xing
- Department of Neurology, Affiliated Hospital of Hebei University, Baoding, Hebei Province, China
| | - Yajing Chen
- Department of Neurology, Affiliated Hospital of Hebei University, Baoding, Hebei Province, China
| | - Junxing Ye
- Department of Orthopaedics, The Third People’s Hospital of Wuxi and The Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu Province, China
| | - Li Ling
- Department of Neurology, Affiliated Hospital of Hebei University, Baoding, Hebei Province, China
| | - Xianshang Zeng
- Department of Orthopaedics, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong Province, China
- Xianshang Zeng, Department of Orthopaedics, The First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan 2nd Road, Yuexiu District, Guangzhou 510080, Guangdong Province, China. Guowei Han, Department of Orthopaedics, The First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan 2nd Road, Yuexiu District, Guangzhou 510080, Guangdong Province, China.
| | - Guowei Han
- Department of Orthopaedics, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong Province, China
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Baranowski BJ, Marko DM, Fenech RK, Yang AJT, MacPherson REK. Healthy brain, healthy life: a review of diet and exercise interventions to promote brain health and reduce Alzheimer's disease risk. Appl Physiol Nutr Metab 2020; 45:1055-1065. [PMID: 32717151 DOI: 10.1139/apnm-2019-0910] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
With the world's population aging at a rapid rate, the prevalence of Alzheimer's disease (AD) has significantly increased. These statistics are alarming given recent evidence that a third of dementia cases may be preventable. The role of lifestyle factors, such as diet and exercise, can directly alter the risk of disease development. However, an understanding of the effectiveness of dietary patterns and exercise strategies to reduce AD risk or improve brain function is not fully understood. The aim of this review is to discuss the effects of diet and exercise on AD risk. Key components of the Western and Mediterranean diets are discussed in relation to AD progression, as well as how physical activity promotes brain health. Components of the Western diet (saturated fatty acids and simple carbohydrates) are detrimental to the brain, impair cognition, and increase AD pathologies. While components of the Mediterranean diet (polyunsaturated fatty acids, polyphenols, and antioxidants) are considered to be neuroprotective. Exercise can significantly reduce the risk of AD; however, specific exercise recommendations for older adults are limited and optimal intensity, duration, and type remains unknown. This review highlights important modifiable risk factors for AD and points out potential avenues for future research. Novelty Diet and exercise are modifiable factors that can improve brain health and reduce the risk of AD. Polyunsaturated fatty acids, polyphenols, and antioxidants are neuroprotective. Exercise reduces neuroinflammation, improves brain insulin sensitivity, and increases brain derived neurotrophic factor.
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Affiliation(s)
- Bradley J Baranowski
- Department of Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
| | - Daniel M Marko
- Department of Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
| | - Rachel K Fenech
- Department of Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
| | - Alex J T Yang
- Department of Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
| | - Rebecca E K MacPherson
- Department of Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada.,Centre for Neuroscience, Brock University, St. Catharines, ON L2S 3A1, Canada
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Ferdinand AO, Akinlotan MA, Callaghan T, Towne SD, Bolin J. Diabetes-related hospital mortality in the U.S.: A pooled cross-sectional study of the National Inpatient Sample. J Diabetes Complications 2019; 33:350-355. [PMID: 30910276 DOI: 10.1016/j.jdiacomp.2019.01.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 01/29/2019] [Accepted: 01/31/2019] [Indexed: 01/22/2023]
Abstract
AIMS Despite advancements in the diagnosis and treatment of diabetes in the U.S., place-based disparities still exist. The purpose of this study is to determine place-based and other individual-level variations in diabetes-related hospital deaths. METHODS A pooled cross-sectional study of the 2009-2015 National Inpatient Sample was conducted to examine the odds of a diabetes-related hospital death. The main predictors were rurality and census region. Individual-level socio-demographic factors were also examined. RESULTS Approximately 1.5% (n = 147,069) of diabetes-related hospitalizations resulted in death. In multivariable analysis, the odds of diabetes-related hospital deaths increased across the urban-rural continuum, except for large fringe metropolitan areas, with the highest odds of such deaths occurring among residents of micropolitan (OR = 1.16, 95% C.I. = 1.14, 1.18) and noncore areas (OR = 1.21, 95% C.I. = 1.19, 1.24). Compared to residents of the Northeast, residents in the South, West and Midwest regions were significantly more likely to experience a diabetes-related hospital death. Asian or Pacific Islanders, Medicaid-covered patients and the uninsured were also more likely to die during a diabetes-related hospitalization. CONCLUSIONS Place-based disparities in diabetes-related hospital deaths exist. Targeted focus should be placed on the control of diabetic complications in the South, West and Midwest census regions, and among rural residents.
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Affiliation(s)
- Alva O Ferdinand
- Department of Health Policy and Management, School of Public Health, Texas A&M University, College Station, TX, United States of America; Southwest Rural Health Research Center, School of Public Health, Texas A&M University, College Station, TX, United States of America.
| | - Marvellous A Akinlotan
- Department of Health Policy and Management, School of Public Health, Texas A&M University, College Station, TX, United States of America; Southwest Rural Health Research Center, School of Public Health, Texas A&M University, College Station, TX, United States of America
| | - Timothy Callaghan
- Department of Health Policy and Management, School of Public Health, Texas A&M University, College Station, TX, United States of America; Southwest Rural Health Research Center, School of Public Health, Texas A&M University, College Station, TX, United States of America
| | - Samuel D Towne
- Southwest Rural Health Research Center, School of Public Health, Texas A&M University, College Station, TX, United States of America; Department of Health Management and Informatics, University of Central Florida, Orlando, FL, United States of America; Disability, Aging, and Technology Cluster, University of Central Florida, Orlando, FL, United States of America
| | - Jane Bolin
- Department of Health Policy and Management, School of Public Health, Texas A&M University, College Station, TX, United States of America; Southwest Rural Health Research Center, School of Public Health, Texas A&M University, College Station, TX, United States of America
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