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Rivero-Salgado GM, Zamudio SR, Fregoso-Aguilar TA, Quevedo-Corona L. Effects of a Functional Food Made with Salvia hispanica L. (Chia Seed), Amaranthus hypochondriacus L. (Amaranth), and an Ethanolic Extract of Curcuma longa L. (Curcumin) in a Rat Model of Childhood Obesity. Foods 2024; 13:1720. [PMID: 38890948 PMCID: PMC11171659 DOI: 10.3390/foods13111720] [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: 04/24/2024] [Revised: 05/23/2024] [Accepted: 05/28/2024] [Indexed: 06/20/2024] Open
Abstract
Obesity is a global health problem and is increasing in prevalence in most countries. Although obesity affects all age groups, children are the most vulnerable sector. Functional foods are novel formulated foods containing substances (i.e., nutrients, phytochemicals, probiotics, etc.) that have potential health-enhancing or disease-preventing value. The research objective was to study the possible beneficial effects of providing a functional food made with amaranth flour, chia seed, and curcumin extract on the metabolism and behavior of a rat model of childhood obesity. Male Wistar rat pups from two litters of different sizes, a normal litter (NL) (10 pups) and a small litter (SL) (4 pups), were used. After weaning, the rats were fed a hypercaloric diet (HD) or an HD supplemented with the functional food mixture. Body weight and energy intake were measured for seven weeks, and locomotor activity, learning, and memory tests were also performed. At the end of the experiment, glucose and lipid metabolism parameters were determined. The results showed that in this model of obesity produced by early overfeeding and the consumption of a hypercaloric diet, anxiety-like behaviors and metabolic alterations occurred in the rat offspring; however, the provision of the functional food failed to reduce or prevent these alterations, and an exacerbation was even observed in some metabolic indicators. Interestingly, in the NL rats, the provision of the functional food produced some of the expected improvements in health, such as significant decreases in body weight gain and liver cholesterol and non-significant decreases in adipose tissue and leptin and insulin serum levels.
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Affiliation(s)
| | | | | | - Lucía Quevedo-Corona
- Departamento de Fisiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Av. Wilfrido Massieu 399, Nueva Industrial Vallejo, Gustavo A. Madero, Mexico City 07738, Mexico; (G.M.R.-S.); (S.R.Z.); (T.A.F.-A.)
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2
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Syed SR, M. A. SD. A diagnosis model for brain atrophy using deep learning and MRI of type 2 diabetes mellitus. Front Neurosci 2023; 17:1291753. [PMID: 37965222 PMCID: PMC10642919 DOI: 10.3389/fnins.2023.1291753] [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: 09/10/2023] [Accepted: 10/09/2023] [Indexed: 11/16/2023] Open
Abstract
Objective Type 2 Diabetes Mellitus (T2DM) is linked to cognitive deterioration and anatomical brain abnormalities like cerebral brain atrophy and cerebral diseases. We aim to develop an automatic deep learning-based brain atrophy diagnosis model to detect, segment, classify, and predict the survival rate. Methods Two hundred thirty-five MRI images affected with brain atrophy due to prolonged T2DM were acquired. The dataset was divided into training and testing (80:20%; 188, 47, respectively). Pre-processing is done through a novel convolutional median filter, followed by segmentation of atrophy regions, i.e., the brain shrinkage, white and gray matter is done through the proposed TRAU-Net model (Transfer Residual Attention U-Net), classification with the proposed Multinomial Logistic regression with Attention Swin Transformer (MLAST), and prediction of chronological age is determined through Multivariate CoX Regression model (MCR). The classification of Brain Atrophy (BA) types is determined based on the features extracted from the segmented region. Performance measures like confusion matrix, specificity, sensitivity, accuracy, F1-score, and ROC-AUC curve are used to measure classification model performance, whereas, for the segmentation model, pixel accuracy and dice similarity coefficient are applied. Results The pixel accuracy and dice coefficient for segmentation were 98.25 and 96.41, respectively. Brain atrophy multi-class classification achieved overall training accuracy is 0.9632 ± 1.325, 0.9677 ± 1.912, 0.9682 ± 1.715, and 0.9521 ± 1.877 for FA, PA, R-MTA, and L-MTA, respectively. The overall AUC-ROC curve for the classification model is 0.9856. The testing and validation accuracy obtained for the proposed model are 0.9379 and 0.9694, respectively. The prediction model's performance is measured using correlation coefficient (r), coefficient determination r2, and Mean Square Error (MSE) and recorded 0.951, 0.904, and 0.5172, respectively. Conclusion The brain atrophy diagnosis model consists of sub-models to detect, segment, and classify the atrophy regions using novel deep learning and multivariate mathematical models. The proposed model has outperformed the existing models regarding multi-classification and segmentation; therefore, the automated diagnosis model can be deployed in healthcare centers to assist physicians.
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Affiliation(s)
| | - Saleem Durai M. A.
- Vellore Institute of Technology, School of Computer Science and Engineering, Vellore, Tamilnadu, India
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3
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Silveira-Rodrigues JG, Campos BT, de Lima AT, Ogando PHM, Gomes CB, Gomes PF, Aleixo IMS, Soares DD. Acute bouts of aerobic and resistance exercise similarly alter inhibitory control and response time while inversely modifying plasma BDNF concentrations in middle-aged and older adults with type 2 diabetes. Exp Brain Res 2023; 241:1173-1183. [PMID: 36912948 DOI: 10.1007/s00221-023-06588-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 02/28/2023] [Indexed: 03/14/2023]
Abstract
Impairments in several domains of cognitive functions are observed in people with Type 2 Diabetes Mellitus (T2DM), often accompanied by low Brain-derived neurotrophic factor (BDNF) concentrations. Although aerobic and resistance exercise enhances cognitive functions and raises BDNF concentrations in several populations, it remained uncertain in T2DM subjects. This study compared the effects of a single bout of aerobic (AER, 40 min of treadmill walk at 90-95% of the maximum walk speed) or resistance (RES, 3 × 10 repetitions in eight exercises at 70% of 10-RM) exercise on specific cognitive domain performance and plasma BDNF concentrations of physically active T2DM subjects. Eleven T2DM subjects (9 women/2 men; 63 ± 7 years) performed two counterbalanced trials on non-consecutive days. Stroop Color and Word (SCW) task [assessing the attention (congruent condition) and inhibitory control (incongruent condition)], Visual response time (assessing the response time), and blood collection (for plasma BDNF concentrations) were performed pre and post-exercise sessions. With distinct magnitude, both AER and RES improved the incongruent-SCW (d = - 0.26 vs. - 0.43 in AER and RES, respectively; p < 0.05), RT(best) (d = - 0.31 vs. - 0.52, p < 0.05), and RT(1-5) (d = - 0.64 vs. - 0.21, p < 0.05). The congruent-SCW and RT(6-10) were not statistically different. Plasma BDNF concentrations were elevated 11% in AER (d = 0.30) but decreased by 15% in RES (d = - 0.43). A single session of aerobic or resistance exercise similarly improved the inhibitory control and response time of physically active T2DM subjects. Nevertheless, aerobic and resistance exercise sessions induced an opposite clinical effect in plasma BDNF concentrations.
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Affiliation(s)
- João G Silveira-Rodrigues
- Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Federal University of Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
- Movement Laboratory, Medicine School, Federal University of Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Bruno T Campos
- Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Federal University of Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - André T de Lima
- Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Federal University of Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Pedro H M Ogando
- Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Federal University of Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
- Movement Laboratory, Medicine School, Federal University of Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Camila B Gomes
- Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Federal University of Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Patrícia F Gomes
- Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Federal University of Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Ivana M S Aleixo
- Movement Laboratory, Medicine School, Federal University of Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Danusa D Soares
- Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Federal University of Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil.
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Song S, Qiu Z, Sun-Waterhouse D, Bai X, Xiang L, Zheng Z, Qiao X. Garlic polysaccharide-Cr (III) complexes with enhanced in vitro and in vivo hypoglycemic activities. Int J Biol Macromol 2023; 237:124178. [PMID: 36990417 DOI: 10.1016/j.ijbiomac.2023.124178] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 03/11/2023] [Accepted: 03/22/2023] [Indexed: 03/29/2023]
Abstract
This study aimed to prepare a complex of Cr (III) and garlic polysaccharides (GPs) and evaluate the in vitro and in vivo hypoglycemic activities of GPs and GP-Cr (III) complexes. The chelation of GPs with Cr (III) increased molecular weight, modified crystallinity, and altered morphological characteristics, through targeting the OH of hydroxyl groups and involving the C-O/O-C-O structure. The GP-Cr (III) complex had a higher thermal stability over 170-260 °C and higher stability throughout the gastrointestinal digestion. In vitro, the GP-Cr (III) complex exhibited a significantly stronger inhibitory effect against α-glucosidase compared with the GP. In vivo, the GP-Cr (III) complex at a high dose (4.0 mg Cr/kg body weight) generally had a higher hypoglycemic activity than the GP in (pre)-diabetic mice induced by a high-fat and high-fructose diet, based on indices like body weight, blood glucose levels, glucose tolerance, insulin resistance, insulin sensitivity, blood lipid levels, and hepatic morphology and function. Therefore, GP-Cr (III) complexes could be a potential Cr (III) supplement with an enhanced hypoglycemic activity.
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Affiliation(s)
- Shuoshuo Song
- Key Laboratory of Food Processing Technology and Quality Control of Shandong Higher Education Institutes, College of Food Science and Engineering, Shandong Agricultural University, 61 Daizong Street, Tai'an 271018, Shandong, PR China
| | - Zhichang Qiu
- Key Laboratory of Food Processing Technology and Quality Control of Shandong Higher Education Institutes, College of Food Science and Engineering, Shandong Agricultural University, 61 Daizong Street, Tai'an 271018, Shandong, PR China
| | - Dongxiao Sun-Waterhouse
- School of Chemical Sciences, The University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Xinyan Bai
- Key Laboratory of Food Processing Technology and Quality Control of Shandong Higher Education Institutes, College of Food Science and Engineering, Shandong Agricultural University, 61 Daizong Street, Tai'an 271018, Shandong, PR China
| | - Lu Xiang
- Key Laboratory of Food Processing Technology and Quality Control of Shandong Higher Education Institutes, College of Food Science and Engineering, Shandong Agricultural University, 61 Daizong Street, Tai'an 271018, Shandong, PR China
| | - Zhenjia Zheng
- Key Laboratory of Food Processing Technology and Quality Control of Shandong Higher Education Institutes, College of Food Science and Engineering, Shandong Agricultural University, 61 Daizong Street, Tai'an 271018, Shandong, PR China.
| | - Xuguang Qiao
- Key Laboratory of Food Processing Technology and Quality Control of Shandong Higher Education Institutes, College of Food Science and Engineering, Shandong Agricultural University, 61 Daizong Street, Tai'an 271018, Shandong, PR China.
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Shao P, Li X, Qin R, Xu H, Sheng X, Huang L, Ma J, Cheng Y, Chen H, Zhang B, Zhao H, Xu Y. Altered local gyrification and functional connectivity in type 2 diabetes mellitus patients with mild cognitive impairment: A pilot cross-sectional small-scale single center study. Front Aging Neurosci 2022; 14:934071. [PMID: 36204559 PMCID: PMC9530449 DOI: 10.3389/fnagi.2022.934071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 08/26/2022] [Indexed: 11/17/2022] Open
Abstract
Aims This research aimed to explore alterations in the local gyrification index (GI) and resting-state functional connectivity (RSFC) in type 2 diabetes mellitus (T2DM) patients with mild cognitive impairment (MCI). Methods In this study, 126 T2DM patients with MCI (T2DM-MCI), 154 T2DM patients with normal cognition (T2DM-NC), and 167 healthy controls (HC) were recruited. All subjects underwent a battery of neuropsychological tests. A multimodal approach combining surface-based morphometry (SBM) and seed-based RSFC was used to determine the structural and functional alterations in patients with T2DM-MCI. The relationships among the GI, RSFC, cognitive ability, and clinical variables were characterized. Results Compared with the T2DM-NC group and HC group, T2DM-MCI patients showed significantly reduced GI in the bilateral insular cortex. Decreased RSFC was found between the left insula and right precuneus, and the right superior frontal gyrus (SFG). The altered GI was correlated with T2DM duration, global cognition, and episodic memory. The mediation effects of RSFC on the association between GI and cognition were not statistically significant. Conclusion Our results suggest that GI may serve as a novel neuroimaging biomarker to predict T2DM-related MCI and help us to improve the understanding of the neuropathological effects of T2DM-related MCI.
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Affiliation(s)
- Pengfei Shao
- Department of Neurology, Affiliated Drum Tower Hospital, Nanjing University Medical School, Nanjing, China
- Jiangsu Key Laboratory for Molecular Medicine, Nanjing University Medical School, Nanjing, China
- Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing, China
| | - Xin Li
- Department of Radiology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, China
| | - Ruomeng Qin
- Department of Neurology, Affiliated Drum Tower Hospital, Nanjing University Medical School, Nanjing, China
- Jiangsu Key Laboratory for Molecular Medicine, Nanjing University Medical School, Nanjing, China
- Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing, China
| | - Hengheng Xu
- Department of Neurology, Affiliated Drum Tower Hospital, Nanjing University Medical School, Nanjing, China
- Jiangsu Key Laboratory for Molecular Medicine, Nanjing University Medical School, Nanjing, China
- Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing, China
| | - Xiaoning Sheng
- Department of Neurology, Affiliated Drum Tower Hospital, Nanjing University Medical School, Nanjing, China
- Jiangsu Key Laboratory for Molecular Medicine, Nanjing University Medical School, Nanjing, China
- Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing, China
| | - Lili Huang
- Department of Neurology, Affiliated Drum Tower Hospital, Nanjing University Medical School, Nanjing, China
- Jiangsu Key Laboratory for Molecular Medicine, Nanjing University Medical School, Nanjing, China
- Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing, China
| | - Junyi Ma
- Department of Neurology, Affiliated Drum Tower Hospital, Nanjing University Medical School, Nanjing, China
- Jiangsu Key Laboratory for Molecular Medicine, Nanjing University Medical School, Nanjing, China
- Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing, China
| | - Yue Cheng
- Department of Neurology, Affiliated Drum Tower Hospital, Nanjing University Medical School, Nanjing, China
| | - Haifeng Chen
- Department of Neurology, Affiliated Drum Tower Hospital, Nanjing University Medical School, Nanjing, China
| | - Bing Zhang
- Department of Radiology, Affiliated Drum Tower Hospital, Nanjing University Medical School, Nanjing, China
| | - Hui Zhao
- Department of Neurology, Affiliated Drum Tower Hospital, Nanjing University Medical School, Nanjing, China
- Jiangsu Key Laboratory for Molecular Medicine, Nanjing University Medical School, Nanjing, China
- Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing, China
- Department of Neurology, Affiliated Taikang Xianlin Drum Tower Hospital, Nanjing University Medical School, Nanjing, China
- *Correspondence: Hui Zhao
| | - Yun Xu
- Department of Neurology, Affiliated Drum Tower Hospital, Nanjing University Medical School, Nanjing, China
- Jiangsu Key Laboratory for Molecular Medicine, Nanjing University Medical School, Nanjing, China
- Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing, China
- Yun Xu
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6
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Zhang T, Shaw M, Cherbuin N. Association between Type 2 Diabetes Mellitus and Brain Atrophy: A Meta-Analysis. Diabetes Metab J 2022; 46:781-802. [PMID: 35255549 PMCID: PMC9532183 DOI: 10.4093/dmj.2021.0189] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 12/11/2021] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Type 2 diabetes mellitus (T2DM) is known to be associated with cognitive decline and brain structural changes. This study systematically reviews and estimates human brain volumetric differences and atrophy associated with T2DM. METHODS PubMed, PsycInfo and Cochrane Library were searched for brain imaging studies reporting on brain volume differences between individuals with T2DM and healthy controls. Data were examined using meta-analysis, and association between age, sex, diabetes characteristics and brain volumes were tested using meta-regression. RESULTS A total of 14,605 entries were identified; after title, abstract and full-text screening applying inclusion and exclusion criteria, 64 studies were included and 42 studies with compatible data contributed to the meta-analysis (n=31,630; mean age 71.0 years; 44.4% male; 26,942 control; 4,688 diabetes). Individuals with T2DM had significantly smaller total brain volume, total grey matter volume, total white matter volume and hippocampal volume (approximately 1% to 4%); meta-analyses of smaller samples focusing on other brain regions and brain atrophy rate in longitudinal investigations also indicated smaller brain volumes and greater brain atrophy associated with T2DM. Meta-regression suggests that diabetes-related brain volume differences start occurring in early adulthood, decreases with age and increases with diabetes duration. CONCLUSION T2DM is associated with smaller total and regional brain volume and greater atrophy over time. These effects are substantial and highlight an urgent need to develop interventions to reduce the risk of T2DM for brain health.
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Affiliation(s)
- Tianqi Zhang
- Centre for Research on Ageing, Health and Wellbeing, The Australian National University, Canberra, Australia
| | - Marnie Shaw
- Centre for Research on Ageing, Health and Wellbeing, The Australian National University, Canberra, Australia
| | - Nicolas Cherbuin
- Centre for Research on Ageing, Health and Wellbeing, The Australian National University, Canberra, Australia
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Anstey KJ, Butterworth P, Christensen H, Easteal S, Cherbuin N, Leach L, Burns R, Kiely KM, Mortby ME, Eramudugolla R, Gad I. Cohort Profile Update: The PATH Through Life Project. Int J Epidemiol 2021; 50:35-36. [PMID: 33232442 DOI: 10.1093/ije/dyaa179] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/09/2020] [Indexed: 11/13/2022] Open
Affiliation(s)
- Kaarin J Anstey
- Centre for Research on Ageing, Health and Wellbeing, Research School of Population Health, Australian National University, Canberra, ACT, Australia.,School of Psychology, University of New South Wales, Randwick, NSW, Australia.,Neuroscience Research Australia, Randwick, NSW, Australia
| | - Peter Butterworth
- Centre for Research on Ageing, Health and Wellbeing, Research School of Population Health, Australian National University, Canberra, ACT, Australia.,Melbourne Institute of Applied Economic and Social Research, University of Melbourne, Melbourne, Victoria, Australia
| | - Helen Christensen
- Black Dog Institute, University of South Wales, Sydney, NSW, Australia
| | - Simon Easteal
- John Curtin School of Medical Research, Australian National University, Canberra, ACT, Australia
| | - Nicolas Cherbuin
- Centre for Research on Ageing, Health and Wellbeing, Research School of Population Health, Australian National University, Canberra, ACT, Australia
| | - Liana Leach
- National Centre for Epidemiology and Population Health, Research School of Population Health, Australian National University, Canberra, ACT, Australia
| | - Richard Burns
- Centre for Research on Ageing, Health and Wellbeing, Research School of Population Health, Australian National University, Canberra, ACT, Australia
| | - Kim M Kiely
- School of Psychology, University of New South Wales, Randwick, NSW, Australia.,Neuroscience Research Australia, Randwick, NSW, Australia
| | - Moyra E Mortby
- School of Psychology, University of New South Wales, Randwick, NSW, Australia.,Neuroscience Research Australia, Randwick, NSW, Australia
| | - Ranmalee Eramudugolla
- Centre for Research on Ageing, Health and Wellbeing, Research School of Population Health, Australian National University, Canberra, ACT, Australia.,School of Psychology, University of New South Wales, Randwick, NSW, Australia.,Neuroscience Research Australia, Randwick, NSW, Australia
| | - Imogen Gad
- Centre for Research on Ageing, Health and Wellbeing, Research School of Population Health, Australian National University, Canberra, ACT, Australia.,Neuroscience Research Australia, Randwick, NSW, Australia
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Gómez-Apo E, Mondragón-Maya A, Ferrari-Díaz M, Silva-Pereyra J. Structural Brain Changes Associated with Overweight and Obesity. J Obes 2021; 2021:6613385. [PMID: 34327017 PMCID: PMC8302366 DOI: 10.1155/2021/6613385] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 05/14/2021] [Accepted: 07/09/2021] [Indexed: 12/17/2022] Open
Abstract
Obesity is a global health problem with a broad set of comorbidities, such as malnutrition, metabolic syndrome, diabetes, systemic hypertension, heart failure, and kidney failure. This review describes recent findings of neuroimaging and two studies of cell density regarding the roles of overnutrition-induced hypothalamic inflammation in neurodegeneration. These studies provided consistent evidence of smaller cortical thickness or reduction in the gray matter volume in people with overweight and obesity; however, the investigated brain regions varied across the studies. In general, bilateral frontal and temporal areas, basal nuclei, and cerebellum are more commonly involved. Mechanisms of volume reduction are unknown, and neuroinflammation caused by obesity is likely to induce neuronal loss. Adipocytes, macrophages of the adipose tissue, and gut dysbiosis in overweight and obese individuals result in the secretion of the cytokines and chemokines that cross the blood-brain barrier and may stimulate microglia, which in turn also release proinflammatory cytokines. This leads to chronic low-grade neuroinflammation and may be an important factor for apoptotic signaling and neuronal death. Additionally, significant microangiopathy observed in rat models may be another important mechanism of induction of apoptosis. Neuroinflammation in neurodegenerative diseases (such as Alzheimer's and Parkinson's diseases) may be similar to that in metabolic diseases induced by malnutrition. Poor cognitive performance, mainly in executive functions, in individuals with obesity is also discussed. This review highlights the neuroinflammatory and neurodegenerative mechanisms linked to obesity and emphasizes the importance of developing effective prevention and treatment intervention strategies for overweight and obese individuals.
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Affiliation(s)
- Erick Gómez-Apo
- Servicio de Anatomía Patológica, Hospital General de México “Dr. Eduardo Liceaga”, Ciudad de México, Mexico
| | - Alejandra Mondragón-Maya
- Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla, Mexico
| | - Martina Ferrari-Díaz
- Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla, Mexico
| | - Juan Silva-Pereyra
- Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla, Mexico
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Combatting Nitrosative Stress and Inflammation with Novel Substituted Triazinoindole Inhibitors of Aldose Reductase in PC12 Cells Exposed to 6-Hydroxydopamine Plus High Glucose. Neurotox Res 2020; 39:210-226. [PMID: 33146867 DOI: 10.1007/s12640-020-00305-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 09/22/2020] [Accepted: 10/22/2020] [Indexed: 12/17/2022]
Abstract
Cellular redox dysregulation produced by aldose reductase (AR) in the presence of high blood sugar is a mechanism involved in neurodegeneration commonly observed in diabetes mellitus (DM) and Parkinson's disease (PD); therefore, AR is a key target for treatment of both diseases. The substituted triazinoindole derivatives 2-(3-thioxo-2H-[1,2,4]triazino[5,6-b]indol-5(3H)-yl) acetic acid (cemtirestat or CMTI) and 2-(3-oxo-2H-[1,2,4]triazino[5,6-b]indol-5(3H)-yl) acetic acid (COTI) are well-known AR inhibitors (ARIs). The neuroprotective properties of CMTI, COTI, the clinically used epalrestat (EPA), and the pyridoindole antioxidants stobadine and SMe1EC2 were all tested in the neurotoxic models produced by hyperglycemic glucotoxicity (HG, 75 mM D-glucose, 72 h), 6-hydroxydopamine (6-OHDA), and HG+6-OHDA models in PC12 cells. Cell viability decreased in all toxic models, increased by 1-5 μM EPA, and decreased by COTI at ≥ 2.5 μM. In the HG model alone, where compounds were present in the medium for 24 h after a continuous 24-h exposure to HG, cell viability was improved by 100 nM-5 μM EPA, 1-10 μM ARIs, and the antioxidants studied, but decreased by EPA at ≥ 10 μM. In the 6-OHDA model alone, where cells were treated with compounds for 24 h and further exposed to 100 μM 6-OHDA (8 h), only the antioxidants protected cell viability. In the HG+6-OHDA model, where cells were treated with all compounds (1 nM to 50 μM) for 48 h and exposed to 75 mM glucose for 24 h followed by incubation with 6-OHDA for 8 h, cell viability was protected by 100 nM-10 μM ARIs and 100-500 nM EPA, but not by antioxidants. All ARIs inhibited the HG+6-OHDA-induced increase in iNOS, IL-1β, TNF-α, 3-NT, and total oxidant status at 1-50 μM, while increased SOD, CAT, GPx, and total antioxidant status at 1-10 μM. EPA and CMTI also reduced the HG+6-OHDA-induced increase in the cellular levels of nuclear factor kB (NF-KB). The neuroprotective potential of the novel ARIs and the pyridoindole antioxidants studied constitutes a promising tool for the development of therapeutic strategies against DM-induced and PD-related neurodegeneration.
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10
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Walsh JJ, Myette-Côté É, Neudorf H, Little JP. Potential Therapeutic Effects of Exogenous Ketone Supplementation for Type 2 Diabetes: A Review. Curr Pharm Des 2020; 26:958-969. [PMID: 32013822 DOI: 10.2174/1381612826666200203120540] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 11/25/2019] [Indexed: 12/17/2022]
Abstract
Type 2 diabetes (T2D) is among the most prevalent non-communicable lifestyle diseases. We propose that overnutrition and low levels of physical activity can contribute to a vicious cycle of hyperglycemia, inflammation and oxidative stress, insulin resistance, and pancreatic β-cell dysfunction. The pathophysiological manifestations of T2D have a particular impact on the vasculature and individuals with T2D are at high risk of cardiovascular disease. Targeting aspects of the vicious cycle represent therapeutic approaches for improving T2D and protecting against cardiovascular complications. The recent advent of exogenous oral ketone supplements represents a novel, non-pharmacological approach to improving T2D pathophysiology and potentially protecting against cardiovascular disease risk. Herein, we review the emerging literature regarding the effects of exogenous ketone supplementation on metabolic control, inflammation, oxidative stress, and cardiovascular function in humans and highlight the potential application for breaking the vicious cycle of T2D pathophysiology.
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Affiliation(s)
- Jeremy J Walsh
- Exercise, Metabolism and Inflammation Laboratory, University of British Columbia Okanagan, Kelowna, BC, Canada
| | - Étienne Myette-Côté
- Exercise, Metabolism and Inflammation Laboratory, University of British Columbia Okanagan, Kelowna, BC, Canada
| | - Helena Neudorf
- Exercise, Metabolism and Inflammation Laboratory, University of British Columbia Okanagan, Kelowna, BC, Canada
| | - Jonathan P Little
- Exercise, Metabolism and Inflammation Laboratory, University of British Columbia Okanagan, Kelowna, BC, Canada
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Walsh JJ, Myette-Côté É, Little JP. The Effect of Exogenous Ketone Monoester Ingestion on Plasma BDNF During an Oral Glucose Tolerance Test. Front Physiol 2020; 11:1094. [PMID: 33013465 PMCID: PMC7509175 DOI: 10.3389/fphys.2020.01094] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 08/07/2020] [Indexed: 01/03/2023] Open
Abstract
Brain-derived neurotrophic factor (BDNF) is important for brain and metabolic function. Ingestion of a ketone monoester (KME) drink containing beta-hydroxybutyrate (β-OHB) attenuates hyperglycemia in humans and increases neuronal BDNF in rodents. Whether KME affects BDNF in humans is currently unknown. This study examined the effect of KME ingestion before an oral glucose tolerance test (OGTT) on plasma BDNF in normal-weight adults (NW) and adults with obesity (OB). Methods: Exploratory, secondary analyses of two studies were performed. Study 1 included NW (n = 18; age = 25.3 ± 4.3 years; BMI = 22.2 ± 2.3 kg/m2) and Study 2 included OB (n = 12; age = 48.8 ± 9.5 years; BMI = 33.7 ± 5.0 kg/m2). Participants ingested 0.45 ml/kg-1 body weight KME or Placebo 30-min prior to completing a 75 g OGTT. β-OHB and BDNF were measured via blood samples at fasting baseline (pre-OGTT) and 120 min post-OGTT. Results: Study 1: KME significantly increased β-OHB by 800 ± 454% (p < 0.001). BDNF significantly decreased post-OGTT compared to pre-OGTT in Placebo (718.6 ± 830.8 pg/ml vs. 389.3 ± 595.8 pg/ml; p = 0.018), whereas BDNF was unchanged in KME (560.2 ± 689.6 pg/ml vs. 469.2 ± 791.8 pg/ml; p = 0.28). Study 2: KME significantly increased β-OHB by 1,586 ± 602% (p < 0.001). BDNF was significantly higher post-OGTT in the KME condition in OB (time × condition interaction; p = 0.037). There was a moderate relationship between β-OHB and ∆ %BDNF (r = 0.616; p < 0.001). Fasting plasma BDNF was significantly lower in OB compared to NW (132.8 ± 142.8 pg/ml vs. 639.4 ± 756.8 pg/ml; g = 0.845; p = 0.002). Conclusions: Plasma BDNF appears differentially impacted by KME ingestion with OGTT in OB compared to NW. Raising β-OHB via KME may be a strategy for increasing/protecting BDNF during hyperglycemia.
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Affiliation(s)
- Jeremy J. Walsh
- School of Health and Exercise Sciences, University of British Columbia Okanagan, Kelowna, BC, Canada
- Department of Kinesiology, McMaster University, Hamilton, ON, Canada
| | - Étienne Myette-Côté
- Department of Medicine, Université de Sherbrooke, Sherbrooke, QC, Canada
- Research Center on Aging, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Jonathan P. Little
- School of Health and Exercise Sciences, University of British Columbia Okanagan, Kelowna, BC, Canada
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Diabetes and dementia - the two faces of Janus. ACTA ACUST UNITED AC 2020; 5:e186-e197. [PMID: 32832719 PMCID: PMC7433787 DOI: 10.5114/amsad.2020.97433] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 04/18/2020] [Indexed: 01/03/2023]
Abstract
Patients with type 2 diabetes are at high risk for cognitive decline and dementia. Despite the limited data on the possible pathogenetic mechanisms, evidence suggests that cognitive decline, and thus dementia and Alzheimer’s disease, might arise from a complex interplay between type 2 diabetes and the aging brain, including decreased insulin signalling and glucose metabolism, mitochondrial dysfunction, neuroinflammation, and vascular disease. Furthermore, there is increasing interest on the effects of antidiabetic agents on cognitive decline. There are many studies showing that antidiabetic agents might have beneficial effects on the brain, mainly through inhibition of oxidative stress, inflammation, and apoptosis. In addition, experimental studies on patients with diabetes and Alzheimer’s disease have shown beneficial effects on synaptic plasticity, metabolism of amyloid-β, and microtubule-associated protein tau. Therefore, in the present review, we discuss the effects of antidiabetic agents in relation to cognitive decline, and in particular dementia and Alzheimer’s disease, in patients with type 2 diabetes.
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Walsh EI, Jacka FN, Butterworth P, Anstey KJ, Cherbuin N. Midlife susceptibility to the effects of poor diet on diabetes risk. Eur J Clin Nutr 2020; 75:85-90. [PMID: 32651462 DOI: 10.1038/s41430-020-0673-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 05/19/2020] [Accepted: 06/23/2020] [Indexed: 12/14/2022]
Abstract
OBJECTIVE Type 2 diabetes mellitus (T2D) prevalence continues to increase, and age of incidence continues to decrease. More information is needed to target interventions to the ages where they can be most effective. The objective of this study was to explore the degree to which the association between diet and T2D incidence changes through adulthood. METHODS Participants were a large number (N = 2818) of community living adults in Canberra and Queanbeyan, Australia across three cohorts; young (20-24 followed to 32-36), mid-life (40-44 followed to 52-56) and late-life (60-64 followed to 72-76). Self-report dietary pattern scores at baseline and diabetes incidence across 12 years follow-up were measured, alongside confounders of caloric intake, sex, smoking status, years of education, hypertension, BMI and physical activity. RESULTS Cox proportional hazards indicated that neither Western nor Prudent dietary pattern scores were significantly associated with T2D incidence when confounders were included in the model. Unadjusted estimates suggested a positive association between Western dietary pattern scores and subsequent diabetes incidence (HR = 1.40, 95% CI [1.18, 1.64]). Compared with the mid-life cohort, a higher Western dietary pattern score posed a lower risk for incident T2D in the young cohort (unadjusted HR = 0.46, 95% CI [0.22, 0.96]), who also had significantly lower BMI and higher physical activity. No such significant effects were found for the late-life cohort. CONCLUSIONS Our findings indicate that mid-life may be a period of heightened vulnerability to the effects of an unhealthy diet on diabetes risk, but this effect is attenuated when risk factors related to diet, such as adiposity, are taken into account.
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Affiliation(s)
- Erin I Walsh
- Centre for Research on Ageing, Health and Wellbeing, Australian National University, Canberra, ACT, Australia. .,PHXchange (Population Health Exchange), Australian National University, Canberra, ACT, Australia.
| | - Felice N Jacka
- IMPACT Strategic Research Centre, Deakin University, Geelong, VIC, Australia
| | - Peter Butterworth
- Centre for Research on Ageing, Health and Wellbeing, Australian National University, Canberra, ACT, Australia.,Centre for Mental Health, and Melbourne Institute of Applied Economic and Social Research, The University of Melbourne, Melbourne, VIC, Australia
| | - Kaarin J Anstey
- Centre for Research on Ageing, Health and Wellbeing, Australian National University, Canberra, ACT, Australia.,University of New South Wales, Sydney, NSW, Australia.,Neuroscience Research Australia (NeuRA), Sydney, NSW, Australia
| | - Nicolas Cherbuin
- Centre for Research on Ageing, Health and Wellbeing, Australian National University, Canberra, ACT, Australia
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Hope K. Role of nurses in addressing modifiable risk factors for early Alzheimer's disease and mild cognitive impairment. ACTA ACUST UNITED AC 2020; 29:460-469. [PMID: 32324452 DOI: 10.12968/bjon.2020.29.8.460] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A multidisciplinary advisory group of health professionals involved in dementia care assessed the current evidence base regarding modifiable risk factors (MRFs) for early Alzheimer's disease and mild cognitive impairment. Based on evidence from the published literature and clinical experience, MRFs in four areas were identified where there is evidence to support interventions that may help delay cognitive decline or reduce the risk of developing Alzheimer's disease: medical (eg cardiovascular risk factors), psychosocial (eg depression, anxiety, social isolation), lifestyle (eg lack of physical activity, smoking) and nutrition (eg poor diet, lack of micronutrients). Practical guidance on how health professionals, but in particular nurses, may actively seek to address these MRFs in clinical practice was also developed. Nurses are at the forefront of patient care and, as such, are ideally placed to offer advice to patients that may proactively help mitigate the risks of cognitive decline and the development of Alzheimer's disease.
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Affiliation(s)
- Kevin Hope
- Honorary Professor, Dementia Services Development Centre, Faculty of Social Sciences, University of Stirling
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