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Skv M, Abraham SM, Eshwari O, Golla K, Jhelum P, Maity S, Komal P. Tremendous Fidelity of Vitamin D3 in Age-related Neurological Disorders. Mol Neurobiol 2024; 61:7211-7238. [PMID: 38372958 DOI: 10.1007/s12035-024-03989-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 01/23/2024] [Indexed: 02/20/2024]
Abstract
Vitamin D3 (VD) is a secosteroid hormone and shows a pleiotropic effect in brain-related disorders where it regulates redox imbalance, inflammation, apoptosis, energy production, and growth factor synthesis. Vitamin D3's active metabolic form, 1,25-dihydroxy Vitamin D3 (1,25(OH)2D3 or calcitriol), is a known regulator of several genes involved in neuroplasticity, neuroprotection, neurotropism, and neuroinflammation. Multiple studies suggest that VD deficiency can be proposed as a risk factor for the development of several age-related neurological disorders. The evidence for low serum levels of 25-hydroxy Vitamin D3 (25(OH)D3 or calcidiol), the major circulating form of VD, is associated with an increased risk of Alzheimer's disease (AD), Parkinson's disease (PD), Huntington's disease (HD), dementia, and cognitive impairment. Despite decades of evidence on low VD association with neurological disorders, the precise molecular mechanism behind its beneficial effect remains controversial. Here, we will be delving into the neurobiological importance of VD and discuss its benefits in different neuropsychiatric disorders. The focus will be on AD, PD, and HD as they share some common clinical, pathological, and epidemiological features. The central focus will be on the different attributes of VD in the aspect of its anti-oxidative, anti-inflammatory, anti-apoptotic, anti-cholinesterase activity, and psychotropic effect in different neurodegenerative diseases.
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Affiliation(s)
- Manjari Skv
- Department of Biological Sciences, Birla Institute of Technology and Science-Pilani (BITS-Pilani) Hyderabad campus, Shameerpet-Mandal, Hyderabad, Telangana, India
| | - Sharon Mariam Abraham
- Department of Biological Sciences, Birla Institute of Technology and Science-Pilani (BITS-Pilani) Hyderabad campus, Shameerpet-Mandal, Hyderabad, Telangana, India
| | - Omalur Eshwari
- Department of Biological Sciences, Birla Institute of Technology and Science-Pilani (BITS-Pilani) Hyderabad campus, Shameerpet-Mandal, Hyderabad, Telangana, India
| | - Kishore Golla
- Department of Biological Sciences, Birla Institute of Technology and Science-Pilani (BITS-Pilani) Hyderabad campus, Shameerpet-Mandal, Hyderabad, Telangana, India
| | - Priya Jhelum
- Centre for Research in Neuroscience and Brain Program, The Research Instituteof the, McGill University Health Centre , Montreal, QC, Canada
| | - Shuvadeep Maity
- Department of Biological Sciences, Birla Institute of Technology and Science-Pilani (BITS-Pilani) Hyderabad campus, Shameerpet-Mandal, Hyderabad, Telangana, India
| | - Pragya Komal
- Department of Biological Sciences, Birla Institute of Technology and Science-Pilani (BITS-Pilani) Hyderabad campus, Shameerpet-Mandal, Hyderabad, Telangana, India.
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Rizi ZS, Shams L, Rad FR, Zamani M. Drug Response of Iranian Alzheimer's Patients to Rivastigmine Concerning Their Genotype for VDR rs11568820 and MTHFR C677T Variants: A Pharmacogenetic and Association Study. J Mol Neurosci 2024; 74:75. [PMID: 39112893 DOI: 10.1007/s12031-024-02253-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2024] [Accepted: 07/30/2024] [Indexed: 09/17/2024]
Abstract
Alzheimer's disease is a neurodegenerative disorder with polygenic etiology. Genetic risk variants for Alzheimer's disease differ among populations. Thus, discovering them in each population is clinically important. A total of 118 patients and 97 controls for VDR rs11568820 and 88 patients and 100 healthy controls for MTHFR C677T polymorphism were genotyped to evaluate the association of these polymorphisms with late-onset Alzheimer's disease in the Iranian population, along with their impacts on the response to Rivastigmine treatment. The VDR C allele was significantly associated with Alzheimer's disease and provided protection against it (P = 0.003, RR = 1.14, 95% CI 1.04-1.24), while the T allele increased susceptibility (P = 0.003, RR = 1.93, 95% CI 1.23-3.02). These results were also considerable upon excluding the effect of APOE ε4 allele. The Prevalence-corrected Positive Predictive Value was 1.71% for the VDR CC genotype and 4% for the VDR CT genotype, indicating lower and almost twofold higher chances of developing Alzheimer's disease, respectively. No significant correlation was observed between MTHFR C677T and Alzheimer's disease. Based on our pharmacogenetic study, MTHFR T allele carriers lacking APOE ε4 allele showed a better response to Rivastigmine treatment after a 2-year follow-up. Moreover, patients with VDR CC genotype displayed milder Alzheimer's disease, particularly when coincided with the APOE ε4 allele. The VDR rs11568820 polymorphism affects both Alzheimer's disease risk and the response to Rivastigmine in Iranian patients. Also, MTHFR C677T polymorphism may play a role in the response to Rivastigmine, through a pathway that needs to be elucidated in future studies.
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Affiliation(s)
- Zahra Salimian Rizi
- School of Medicine, Department of Medical Genetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Leila Shams
- School of Medicine, Department of Medical Genetics, Tehran University of Medical Sciences, Tehran, Iran
- Molecular Medicine Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Fatemeh Rezaei Rad
- School of Medicine, Department of Medical Genetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahdi Zamani
- School of Medicine, Department of Medical Genetics, Tehran University of Medical Sciences, Tehran, Iran.
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Gbadamosi I, Yawson EO, Akesinro J, Adeleke O, Tokunbo O, Bamisi O, Ibrahim-Abdulkareem R, Awoniran P, Gbadamosi R, Lambe E, Atoyebi A, Bayo-Olugbami AA, Abayomi TA, Arogundade TT. Vitamin D attenuates monosodium glutamate-induced behavioural anomalies, metabolic dysregulation, cholinergic impairment, oxidative stress, and astrogliosis in rats. Neurotoxicology 2024; 103:297-309. [PMID: 38964510 DOI: 10.1016/j.neuro.2024.06.015] [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: 03/26/2024] [Revised: 06/16/2024] [Accepted: 06/27/2024] [Indexed: 07/06/2024]
Abstract
BACKGROUND Monosodium glutamate (MSG) is a commonly used flavor enhancer that has raised concerns due to its potential adverse effects on various organs. This study explored the neuroprotective potential of Vitamin D, a beneficial micronutrient, in mitigating MSG-induced neurotoxicity. MATERIALS AND METHODS Adult male Wistar rats were categorized into five groups: control (2 ml/kg PBS orally for 30 days), MSG (40 mg/kg orally for 30 days), VIT-D (oral cholecalciferol; 500 IU/kg for 30 days), MSG+VIT-D (MSG for 30 days followed by VIT-D for another 30 days), and VIT-D/MSG (concurrent VIT-D and MSG for 30 days). The rats underwent neurobehavioral, histochemical, and biochemical analyses following the treatments. RESULTS MSG treatment caused a decline in both long and short-term memory, along with reduced exploratory and anxiogenic behavior, mitigated by vitamin D treatment. MSG exposure also induced impaired behavior, dyslipidemia, oxidative stress, lipid peroxidation, altered cholinergic transmission, and increased chromatolysis and neuroinflammation in the frontal cortex, hippocampus, and cerebellum. CONCLUSIONS VIT-D demonstrated a mitigating effect on MSG-induced adverse outcomes, highlighting its potential to attenuate neurodegenerative cascades. This investigation contributes to understanding MSG-associated neurotoxicity and suggests vitamin D as a valuable and potential intervention for neuroprotection.
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Affiliation(s)
- Ismail Gbadamosi
- Laboratory for Translational Research in Neuropsychiatric Disorders (TREND), BRAINCITY - Centre of Excellence for Neural Plasticity and Brain Disorders, Institute of Experimental Biology Marceli Nencki, Polish Academy of Sciences, Warsaw, Poland.
| | - Emmanuel Olusola Yawson
- Department of Human Anatomy, Neurobiology Division, Faculty of Basic Medical Sciences, Redeemers University, Ede, Nigeria
| | - Justice Akesinro
- Department of Human Anatomy, Neurobiology Division, Faculty of Basic Medical Sciences, Redeemers University, Ede, Nigeria
| | - Opeyemi Adeleke
- Department of Anatomy, Faculty of Basic Medical Sciences, College of Health Sciences, Osun State University, Osogbo, Nigeria
| | - Olorunfemi Tokunbo
- Department of Anatomy, Faculty of Basic Medical Sciences, College of Health Sciences, Osun State University, Osogbo, Nigeria
| | - Olawande Bamisi
- Department of Anatomy, Faculty of Basic Medical Sciences, Ekiti State University, Ado Ekiti, Nigeria
| | - Rukayat Ibrahim-Abdulkareem
- Department of Anatomy, Neurobiology Division, Faculty of Basic Medical Sciences, University of Ilorin, Nigeria
| | - Paul Awoniran
- Department of Human Anatomy, Neurobiology Division, Faculty of Basic Medical Sciences, Redeemers University, Ede, Nigeria
| | | | - Ezra Lambe
- Department of Anatomy, Faculty of Basic Medical Sciences, Adeleke University, Ede, Nigeria
| | - Aminat Atoyebi
- Department of Anatomy, Faculty of Basic Medical Sciences, Al-Hikmah University, Ilorin, Nigeria
| | | | - Taiwo Adekemi Abayomi
- Department of Anatomy, Faculty of Basic Medical Sciences, College of Health Sciences, Osun State University, Osogbo, Nigeria
| | - Tolulope Timothy Arogundade
- Department of Human Anatomy, Neurobiology Division, Faculty of Basic Medical Sciences, Redeemers University, Ede, Nigeria.
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Guida F, Iannotta M, Perrone M, Infantino R, Giorgini G, Fusco A, Marabese I, Manzo I, Belardo C, Di Martino E, Pagano S, Boccella S, Silvestri C, Luongo L, Di Marzo V, Maione S. PEA-OXA restores cognitive impairments associated with vitamin D deficiency-dependent alterations of the gut microbiota. Biomed Pharmacother 2024; 175:116600. [PMID: 38670046 DOI: 10.1016/j.biopha.2024.116600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 04/10/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024] Open
Abstract
There is a growing evidence suggesting the association of vitamin D deficiency (VDD) and cognitive impairment. In this study we evaluated the possible involvement of gut microbiota in the cognitive impairments mediated by VDD and investigated the effects of pharmacological treatment with the oxazoline derivative of the aliamide palmitoylethanolamide, 2-Pentadecyl-2-oxazoline (PEA-OXA). Mice were submitted to behavioural, biochemical and electrophysiological analysis to assess whether their vitamin D status affected cognitive performance together with gut microbiota composition. In VDD mice we found cognitive malfunctioning associated with reduced neuroplasticity, indicated by impaired long term potentiation, and neuroinflammation at the hippocampal level. Importantly, PEA-OXA counteracted the cognitive impairments and modified the biochemical and functional changes induced by VDD. Additionally, PEA-OXA treatment enhanced gut microbiota diversity, which tended to be decreased by VDD only in female mice, elevated the relative abundance of lactic and butyric acid-producing families, i.e. Aerococcaceae and Butyricicoccaceae, and reversed the VDD-induced decrease of butyrate-producing beneficial genera, such as Blautia in female mice, and Roseburia in male mice. These data provide novel insights for a better understanding of the cognitive decline induced by VDD and related gut dysbiosis and its potential therapeutic treatment.
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Affiliation(s)
- Francesca Guida
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples 80138, Italy.
| | - Monica Iannotta
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples 80138, Italy
| | - Michela Perrone
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples 80138, Italy
| | - Rosmara Infantino
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples 80138, Italy
| | - Giada Giorgini
- Centre de Recherche de l'Institut de Cardiologie et Pneumologie de Quebéc (CRIUCPQ) et Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Centre NUTRISS, Department of Medicine and School of Nutrition, Université Laval, Quebec, Canada
| | - Antimo Fusco
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples 80138, Italy
| | - Ida Marabese
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples 80138, Italy
| | - Iolanda Manzo
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples 80138, Italy
| | - Carmela Belardo
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples 80138, Italy
| | - Emanuele Di Martino
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples 80138, Italy
| | - Salvatore Pagano
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples 80138, Italy
| | - Serena Boccella
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples 80138, Italy
| | - Cristoforo Silvestri
- Centre de Recherche de l'Institut de Cardiologie et Pneumologie de Quebéc (CRIUCPQ) et Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Centre NUTRISS, Department of Medicine and School of Nutrition, Université Laval, Quebec, Canada
| | - Livio Luongo
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples 80138, Italy
| | - Vincenzo Di Marzo
- Centre de Recherche de l'Institut de Cardiologie et Pneumologie de Quebéc (CRIUCPQ) et Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Centre NUTRISS, Department of Medicine and School of Nutrition, Université Laval, Quebec, Canada; Endocannabinoid Research Group, Institute of Biomolecular Chemistry (ICB), National Research Council (CNR), Pozzuoli, Italy; Canada Excellence Research Chair on the Microbiome-Endocannabinoidome Axis in Metabolic Health, Université Laval, and Joint International Research Unit between the Consiglio Nazionale delle Ricerche and Université Laval on Chemical and Biomolecular Studies on the Microbiome and its Impact on Metabolic Health and Nutrition, Canada
| | - Sabatino Maione
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples 80138, Italy.
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Jánosa G, Pandur E, Pap R, Horváth A, Sipos K. Interplay of Vitamin D, Unfolded Protein Response, and Iron Metabolism in Neuroblastoma Cells: A Therapeutic Approach in Neurodegenerative Conditions. Int J Mol Sci 2023; 24:16883. [PMID: 38069206 PMCID: PMC10706223 DOI: 10.3390/ijms242316883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 11/23/2023] [Accepted: 11/27/2023] [Indexed: 12/18/2023] Open
Abstract
Vitamin D3 (VD) is crucial for various cell functions, including gene regulation, antioxidant defense, and neural health. Neurodegenerative conditions are closely linked to the unfolded protein response (UPR), a mechanism reacting to endoplasmic reticulum (ER) stress. Iron metabolism is intricately associated with UPR and neurodegeneration. This study used SH-SY5Y neuroblastoma cells to investigate the relationship between UPR, iron metabolism, and VD. Different sequences of treatments (pre- and post-treatments) were applied using VD and thapsigargin (Tg), and various methods were used for evaluation, including real-time qPCR, Western blotting, ELISA, and iron content analysis. The findings indicate that VD affects UPR pathways, cytokine release, and iron-related genes, potentially offering anti-inflammatory benefits. It also influences iron transporters and storage proteins, helping to maintain cellular iron balance. Furthermore, pro-inflammatory cytokines like interleukin-6 (IL-6) and tumor necrosis factor alpha (TNFα) were impacting UPR activation in cells. VD also influenced fractalkine (CX3CL1) gene expression and secretion, suggesting its potential as a therapeutic agent for addressing neuroinflammation and iron dysregulation. This research provides insights into the intricate connections among VD, UPR, and iron metabolism in SH-SY5Y neuroblastoma cells, with implications for future investigations and potential therapeutic approaches in neurodegenerative diseases characterized by UPR dysregulation and iron accumulation.
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Affiliation(s)
| | - Edina Pandur
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Pécs, H-7624 Pécs, Hungary; (G.J.); (R.P.); (A.H.); (K.S.)
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Hersant H, He S, Maliha P, Grossberg G. Over the Counter Supplements for Memory: A Review of Available Evidence. CNS Drugs 2023; 37:797-817. [PMID: 37603263 DOI: 10.1007/s40263-023-01031-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/24/2023] [Indexed: 08/22/2023]
Abstract
In 2021, the Global Brain Health Supplement Industry Market size was valued at US$7.6 billion. It is predicted to increase to US$15.59 billion by 2030. Memory and its enhancement are a segment of the market that comprised the highest global revenue share in 2021. In the USA alone, dietary supplement sales reached US$18 billion in 2018. The US Food and Drug Administration (FDA) does not have the authority to approve dietary supplements' safety, effectiveness, or labeling before products go on the market. The FDA often does not even review supplements before they go to market. Supplement manufacturers are thus responsible for ensuring their products are safe and that their claims are truthful. An extensive review of current supplements on the market was performed by surveying memory products for sale at local and national pharmacies and grocery stores. A list of 103 supplements was compiled and the ingredients in these memory supplements were reviewed. The 18 most common ingredients in these supplements were identified. Each of the supplements included at least one of the 18 most common ingredients. Scientific data relative to these ingredients and their effect on memory was searched using PubMed and Cochrane library databases. Currently, there is no compelling evidence for use of apoaequorin, coenzyme Q10, coffee extracts, L-theanine, omega-3 fatty acids, vitamin B6, vitamin B9, or vitamin B12 supplementation for memory. On the other hand, there is some current evidence for memory benefit from supplementation with ashwagandha, choline, curcumin, ginger, Lion's Mane, polyphenols, phosphatidylserine, and turmeric. There are current studies with mixed results regarding the benefit of carnitine, gingko biloba, Huperzine A, vitamin D, and vitamin E supplementation for memory. Dietary supplements geared toward improving cognition are a billion-dollar industry that continues to grow despite lacking a solid scientific foundation for their marketing claims. More rigorous studies are needed relative to the long-term use of these supplements in homogenous populations with standardized measurements of cognition. Health care providers need to be aware of any and all supplements their older adult patients may be consuming and be educated about their side effects and interactions with prescription medications. Lastly, the FDA needs to take an active position relative to monitoring marketed supplements regarding safety, purity and claims of efficacy.
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Affiliation(s)
- Haley Hersant
- Department of Psychiatry & Behavioral Neuroscience, Saint Louis University School of Medicine, 1438 South Grand Boulevard, Saint Louis, MO, 63104, USA.
| | - Sean He
- Department of Psychiatry & Behavioral Neuroscience, Saint Louis University School of Medicine, 1438 South Grand Boulevard, Saint Louis, MO, 63104, USA
| | - Peter Maliha
- Department of Psychiatry & Behavioral Neuroscience, Saint Louis University School of Medicine, 1438 South Grand Boulevard, Saint Louis, MO, 63104, USA
| | - George Grossberg
- Department of Psychiatry & Behavioral Neuroscience, Saint Louis University School of Medicine, 1438 South Grand Boulevard, Saint Louis, MO, 63104, USA
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Patel P, Shah J. Vitamin D 3 supplementation ameliorates cognitive impairment and alters neurodegenerative and inflammatory markers in scopolamine induced rat model. Metab Brain Dis 2022; 37:2653-2667. [PMID: 36156759 DOI: 10.1007/s11011-022-01086-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Accepted: 09/14/2022] [Indexed: 11/24/2022]
Abstract
A multifaceted approach can be effective for the treatment of dementia including the most common form, Alzheimer's disease (AD). However, currently, it involves only symptomatic treatment with cholinergic drugs. Beneficial effects of high Vitamin D3 levels or its intake in the prevention and treatment of cognitive disorders have been reported. Thus, the present study examined the preventive effect of Vitamin D3 (Calcitriol) supplementation on cognitive impairment and evaluated its impact on the accumulation or degradation of Aβ plaques. A single intraperitoneal injection of scopolamine was used to induce cognitive impairment in rats. Treatment of Vitamin D3 was provided for 21 days after the injection. Various behavioral parameters like learning, spatial memory and exploratory behavior, biochemical alterations in the brain homogenate and histology of the hippocampus were investigated. Our results indicated that scopolamine-induced rats depicted cognitive deficits with high Aβ levels and hyperphosphorylated tau proteins in the brain tissue, while Vitamin D supplementation could significantly improve the cognitive status and lower these protein levels. These results were supported by the histopathological and immunohistochemical staining of the hippocampal brain region. Furthermore, mechanistic analysis depicted that Vitamin D supplementation improved the Aβ protein clearance by increasing the neprilysin levels. It also reduced the accumulation of Aβ plaques by lowering neuroinflammation as well as oxidative stress. The present findings indicate that Vitamin D3 supplementation can ameliorate cognitive deficits and thereby delay AD progression by increasing Aβ plaque degradation, reducing inflammation and oxidative stress.
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Affiliation(s)
- Parmi Patel
- Department of Pharmacology, Institute of Pharmacy, Nirma University, Ahmedabad, Gujarat, 381 481, India
| | - Jigna Shah
- Department of Pharmacology, Institute of Pharmacy, Nirma University, Ahmedabad, Gujarat, 381 481, India.
- Department of Pharmacology, Institute of Pharmacy, Nirma University, Ahmedabad, Gujarat, 382 481, India.
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Muacevic A, Adler JR, Ramaraju R, Vats A, Nair AR, Bandhu AK, Koirala D, Pallapothu MR, Quintana Mariñez MG, Khan S. The Efficacy of Vitamin D Supplementation in Patients With Alzheimer's Disease in Preventing Cognitive Decline: A Systematic Review. Cureus 2022; 14:e31710. [PMID: 36569670 PMCID: PMC9771092 DOI: 10.7759/cureus.31710] [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: 08/17/2022] [Accepted: 11/20/2022] [Indexed: 11/22/2022] Open
Abstract
To evaluate the role of vitamin D supplementation in preventing cognitive decline in patients with Alzheimer's disease (AD), five databases such as PubMed, PubMed Central (PMC), Medical Literature Analysis and Retrieval System Online (MEDLINE), ScienceDirect, and Google Scholar were searched for articles relevant to the research question with filters such as English and human studies from 2011 to 2022. Two investigators extracted the data and assessed the quality of the study using the predefined criteria. We identified 24 relevant articles after the critical screening. There were five randomized controlled trials (RCTs), two observational studies, two systematic reviews and meta-analyses, one pilot study, and 14 review articles. Most RCTs showed no significant improvement in vitamin D supplementation except for one study, which reported significant improvement in cognition on taking vitamin D in Alzheimer's disease but was not taken much into consideration as it had a small sample size (n=210) and was for a shorter duration. Another study evidenced significant improvement in Mini-Mental State Examination (MMSE) score when memantine and vitamin D were taken together compared to when memantine and vitamin D were taken independently. Studies have shown that vitamin D deficiency is associated with an increased risk of developing cognitive impairment. But there is no sufficient evidence indicating vitamin D supplementation can improve cognitive function in Alzheimer's disease.
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An Alzheimer’s Disease Patient-Derived Olfactory Stem Cell Model Identifies Gene Expression Changes Associated with Cognition. Cells 2022; 11:cells11203258. [PMID: 36291125 PMCID: PMC9601087 DOI: 10.3390/cells11203258] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 10/07/2022] [Accepted: 10/11/2022] [Indexed: 11/25/2022] Open
Abstract
An early symptom of Alzheimer’s disease (AD) is an impaired sense of smell, for which the molecular basis remains elusive. Here, we generated human olfactory neurosphere-derived (ONS) cells from people with AD and mild cognitive impairment (MCI), and performed global RNA sequencing to determine gene expression changes. ONS cells expressed markers of neuroglial differentiation, providing a unique cellular model to explore changes of early AD-associated pathways. Our transcriptomics data from ONS cells revealed differentially expressed genes (DEGs) associated with cognitive processes in AD cells compared to MCI, or matched healthy controls (HC). A-Kinase Anchoring Protein 6 (AKAP6) was the most significantly altered gene in AD compared to both MCI and HC, and has been linked to cognitive function. The greatest change in gene expression of all DEGs occurred between AD and MCI. Gene pathway analysis revealed defects in multiple cellular processes with aging, intellectual deficiency and alternative splicing being the most significantly dysregulated in AD ONS cells. Our results demonstrate that ONS cells can provide a cellular model for AD that recapitulates disease-associated differences. We have revealed potential novel genes, including AKAP6 that may have a role in AD, particularly MCI to AD transition, and should be further examined.
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Lai R, Hsu C, Yu B, Lo Y, Hsu Y, Chen M, Juang J. Vitamin D supplementation worsens Alzheimer's progression: Animal model and human cohort studies. Aging Cell 2022; 21:e13670. [PMID: 35822270 PMCID: PMC9381901 DOI: 10.1111/acel.13670] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 06/24/2022] [Accepted: 06/28/2022] [Indexed: 01/30/2023] Open
Abstract
Vitamin D deficiency has been epidemiologically linked to Alzheimer's disease (AD) and other dementias, but no interventional studies have proved causality. Our previous work revealed that the genomic vitamin D receptor (VDR) is already converted into a non-genomic signaling pathway by forming a complex with p53 in the AD brain. Here, we extend our previous work to assess whether it is beneficial to supplement AD mice and humans with vitamin D. Intriguingly, we first observed that APP/PS1 mice fed a vitamin D-sufficient diet showed significantly lower levels of serum vitamin D, suggesting its deficiency may be a consequence not a cause of AD. Moreover, supplementation of vitamin D led to increased Aβ deposition and exacerbated AD. Mechanistically, vitamin D supplementation did not rescue the genomic VDR/RXR complex but instead enhanced the non-genomic VDR/p53 complex in AD brains. Consistently, our population-based longitudinal study also showed that dementia-free older adults (n = 14,648) taking vitamin D3 supplements for over 146 days/year were 1.8 times more likely to develop dementia than those not taking the supplements. Among those with pre-existing dementia (n = 980), those taking vitamin D3 supplements for over 146 days/year had 2.17 times the risk of mortality than those not taking the supplements. Collectively, these animal model and human cohort studies caution against prolonged use of vitamin D by AD patients.
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Affiliation(s)
- Rai‐Hua Lai
- Institute of Molecular and Genomic MedicineNational Health Research InstitutesMiaoliTaiwan
| | - Chih‐Cheng Hsu
- National Center for Geriatrics and Welfare ResearchNational Health Research InstitutesMiaoliTaiwan
- Institute of Population Health SciencesNational Health Research InstitutesMiaoliTaiwan
- Department of Health Services AdministrationChina Medical UniversityTaichungTaiwan
- Department of Family MedicineMin‐Sheng General HospitalTaoyuanTaiwan
| | - Ben‐Hui Yu
- Institute of Population Health SciencesNational Health Research InstitutesMiaoliTaiwan
| | - Yu‐Ru Lo
- Institute of Population Health SciencesNational Health Research InstitutesMiaoliTaiwan
| | - Yueh‐Ying Hsu
- Institute of Molecular and Genomic MedicineNational Health Research InstitutesMiaoliTaiwan
| | - Mei‐Hsin Chen
- Institute of Molecular and Genomic MedicineNational Health Research InstitutesMiaoliTaiwan
| | - Jyh‐Lyh Juang
- Institute of Molecular and Genomic MedicineNational Health Research InstitutesMiaoliTaiwan
- Ph.D. Program for AgingChina Medical UniversityTaichungTaiwan
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Dimitrakis E, Katsarou MS, Lagiou M, Papastefanopoulou V, Spandidos D, Tsatsakis A, Papageorgiou S, Moutsatsou P, Antoniou K, Kroupis C, Drakoulis N. Association of vitamin D receptor gene haplotypes with late‑onset Alzheimer's disease in a Southeastern European Caucasian population. Exp Ther Med 2022; 24:584. [PMID: 35949319 PMCID: PMC9353461 DOI: 10.3892/etm.2022.11521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 06/27/2022] [Indexed: 11/16/2022] Open
Abstract
Vitamin D receptor (VDR) gene single nucleotide polymorphisms (SNPs) have been investigated over the past years with the aim of identifying any association with the development of Alzheimer's disease (AD). However, information regarding the potential association of VDR SNP haplotypes with AD is limited. The aim of the present study was to provide additional knowledge on the effects of VDR haplotypes on the development of late-onset AD in a cohort of Southeastern European Caucasians (SECs). The study sample included 78 patients with late-onset AD and 103 healthy subjects as the control group. VDR SNPs that were analyzed were TaqI (rs731236), BsmI (rs1544410) and FokI (rs2228570). The CAC (TaqI, BsmI and FokI) haplotype was found to be associated with a 53% lower risk of developing the disease (OR, 0.47; 95% CI, 0.23-0.96; P=0.04) and the TAC (TaqI, BsmI and FokI) haplotype was associated with an ~6-fold greater risk of developing AD (OR, 6.19; 95% CI, 1.91-20.13; P=0.0028). Female subjects carrying the TAC haplotype had a ~9-fold greater risk of developing AD in comparison to female control subjects (OR, 9.27; 95% CI, 1.86-46.28; P<0.05). The TaqI and BsmI polymorphisms were in high linkage disequilibrium (D'=0.9717, r=0.8467) and produced a haplotype with a statistically significant different frequency between the control and AD group. The TA (TaqI and BsmI) haplotype was associated with an ~8-fold greater risk of developing AD (OR, 8.27; 95% CI, 2.70-25.28; P<0.05). Female TA carriers had an ~14-fold greater risk of developing the disease in comparison to female control subjects (OR, 13.93; 95% CI, 2.95-65.87; P<0.05). On the whole, the present study demonstrates that in the SEC population, TAC and TA are risk haplotypes for AD, while the CAC haplotype may act protectively. SEC women carrying the TAC or TA haplotype are at a greater risk of developing AD, thus suggesting that women are markedly affected by the poor utilization of vitamin D induced by the VDR haplotype.
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Affiliation(s)
- Efthimios Dimitrakis
- Research Group of Clinical Pharmacology and Pharmacogenomics, Faculty of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, 15784 Athens, Greece
| | - Martha-Spyridoula Katsarou
- Research Group of Clinical Pharmacology and Pharmacogenomics, Faculty of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, 15784 Athens, Greece
| | - Maria Lagiou
- Research Group of Clinical Pharmacology and Pharmacogenomics, Faculty of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, 15784 Athens, Greece
| | | | - Demetrios Spandidos
- Laboratory of Clinical Virology, Medical School, University of Crete, 71003 Heraklion, Greece
| | - Aristidis Tsatsakis
- Department of Forensic Sciences and Toxicology, Medical School, University of Crete, 71003 Heraklion, Greece
| | - Socratis Papageorgiou
- Second Department of Neurology, University General Hospital ‘ATTIKON’, 12462 Athens, Greece
| | - Paraskevi Moutsatsou
- Department of Clinical Biochemistry, University General Hospital ‘ATTIKON’, 12462 Athens, Greece
| | - Katerina Antoniou
- Department of Pharmacology, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
| | - Christos Kroupis
- Department of Clinical Biochemistry, University General Hospital ‘ATTIKON’, 12462 Athens, Greece
| | - Nikolaos Drakoulis
- Research Group of Clinical Pharmacology and Pharmacogenomics, Faculty of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, 15784 Athens, Greece
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12
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Bathini M, Raghushaker CR, Mahato KK. The Molecular Mechanisms of Action of Photobiomodulation Against Neurodegenerative Diseases: A Systematic Review. Cell Mol Neurobiol 2022. [PMID: 33301129 DOI: 10.1007/s10571-020-01016-9,33301129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/13/2023]
Abstract
Neurodegenerative diseases might be slow but relentless, as we continue to fail in treating or delaying their progression. Given the complexity in the pathogenesis of these diseases, a broad-acting approach like photobiomodulation can prove promising. Photobiomodulation (PBM) uses red and infrared light for therapeutic benefits, working by stimulating growth and proliferation. The implications of photobiomodulation have been studied in several neurodegenerative disease models. It has been shown to improve cell survival, decrease apoptosis, alleviate oxidative stress, suppress inflammation, and rescue mitochondrial function. In in vivo models, it has reportedly preserved motor and cognitive skills. Beyond mitochondrial stimulation, the molecular mechanisms by which photobiomodulation protects against neurodegeneration have not been very well studied. This review has systematically been undertaken to study the effects of photobiomodulation at a molecular level and identify the different biochemical pathways and molecular changes in the process. The data showed the involvement of pathways like extracellular signal-regulated kinase (ERK), mitogen-activated protein kinase (MAPK), and protein kinase B (Akt). In addition, the expression of several genes and proteins playing different roles in the disease mechanisms was found to be influenced by PBM, such as neurotrophic factors and secretases. Studying the literature indicated that PBM can be translated to a potential therapeutic tool, acting through a spectrum of mechanisms that work together to decelerate disease progression in the organism, which is difficult to achieve through pharmacological interventions.
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Affiliation(s)
- Mayukha Bathini
- Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
- Department of Biophysics, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Chandavalli Ramappa Raghushaker
- Department of Biophysics, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Krishna Kishore Mahato
- Department of Biophysics, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India.
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13
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Uthaiah CA, Beeraka NM, Rajalakshmi R, Ramya CM, Madhunapantula SV. Role of Neural Stem Cells and Vitamin D Receptor (VDR)-Mediated Cellular Signaling in the Mitigation of Neurological Diseases. Mol Neurobiol 2022; 59:4065-4105. [PMID: 35476289 DOI: 10.1007/s12035-022-02837-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 04/09/2022] [Indexed: 12/19/2022]
Abstract
Specific stem cell-based therapies for treating Alzheimer's disease, Parkinson's disease, and schizophrenia are gaining importance in recent years. Accumulating data is providing further support by demonstrating the efficacy of neural stem cells in enhancing the neurogenesis in the aging brain. In addition to stem cells, recent studies have shown the efficacy of supplementing vitamin D in promoting neurogenesis and neuronal survival. Studies have also demonstrated the presence of mutational variants and single-nucleotide polymorphisms of the vitamin D receptor (VDR) in neurological disorders; however, implications of these mutations in the pathophysiology and response to drug treatment are yet to be explored. Hence, in this article, we have reviewed recent reports pertaining to the role of neural stem cells and VDR-mediated cellular signaling cascades that are involved in enhancing the neurogenesis through Wnt/β-catenin and Sonic Hedgehog pathways. This review benefits neurobiologists and pharmaceutical industry experts to develop stem cell-based and vitamin D-based therapies to better treat the patients suffering from neurological diseases.
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Affiliation(s)
- Chinnappa A Uthaiah
- Center of Excellence in Molecular Biology and Regenerative Medicine (CEMR, DST-FIST Supported Center), Department of Biochemistry (DST-FIST Supported Department), JSS Medical College, JSS Academy of Higher Education & Research (JSS AHER), Mysuru, 570015, Karnataka, India
| | - Narasimha M Beeraka
- Center of Excellence in Molecular Biology and Regenerative Medicine (CEMR, DST-FIST Supported Center), Department of Biochemistry (DST-FIST Supported Department), JSS Medical College, JSS Academy of Higher Education & Research (JSS AHER), Mysuru, 570015, Karnataka, India
| | - R Rajalakshmi
- Department of Physiology, JSS Medical College, JSS Academy of Higher Education & Research (JSS AHER), Mysuru, 570015, Karnataka, India
| | - C M Ramya
- Department of Physiology, JSS Medical College, JSS Academy of Higher Education & Research (JSS AHER), Mysuru, 570015, Karnataka, India
| | - SubbaRao V Madhunapantula
- Center of Excellence in Molecular Biology and Regenerative Medicine (CEMR, DST-FIST Supported Center), Department of Biochemistry (DST-FIST Supported Department), JSS Medical College, JSS Academy of Higher Education & Research (JSS AHER), Mysuru, 570015, Karnataka, India.
- Special Interest Group in Cancer Biology and Cancer Stem Cells (SIG-CBCSC), JSS Academy of Higher Education & Research (JSS AHER), Mysuru, 570015, Karnataka, India.
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14
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Vitamin D and Parkinson's Disease. Nutrients 2022; 14:nu14061220. [PMID: 35334877 PMCID: PMC8953648 DOI: 10.3390/nu14061220] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 03/04/2022] [Accepted: 03/08/2022] [Indexed: 02/04/2023] Open
Abstract
Vitamin D is a fat-soluble secosteroid, traditionally considered a key regulator of bone metabolism, calcium and phosphorous homeostasis. Its action is made possible through the binding to the vitamin D receptor (VDR), after which it directly and indirectly modulates the expression of thousands of genes. Vitamin D is important for brain development, mature brain activity and associated with many neurological diseases, including Parkinson’s disease (PD). High frequency of vitamin D deficiency in patients with Parkinson’s disease compared to control population was noted nearly twenty years ago. This finding is of interest given vitamin D’s neuroprotective effect, exerted by the action of neurotrophic factors, regulation of nerve growth or through protection against cytotoxicity. Vitamin D deficiency seems to be related to disease severity and disease progression, evaluated by Unified Parkinson’s Disease Rating Scale (UPDRS) and Hoehn and Yahr (H&Y) scale, but not with age of PD onset and duration of disease. Additionally, fall risk has been associated with lower vitamin D levels in PD. However, while the association between vitamin D and motor-symptoms seems to be possible, results of studies investigating the association with non-motor symptoms are conflicting. In addition, very little evidence exists regarding the possibility to use vitamin D supplementation to reduce clinical manifestations and disability in patients with PD. However, considering the positive balance between potential benefits against its limited risks, vitamin D supplementation for PD patients will probably be considered in the near future, if further confirmed in clinical studies.
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15
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Wang B, Dong H, Li H, Yue X, Xie L. A Probable Way Vitamin D Affects Autism Spectrum Disorder: The Nitric Oxide Signaling Pathway. Front Psychiatry 2022; 13:908895. [PMID: 35722582 PMCID: PMC9199365 DOI: 10.3389/fpsyt.2022.908895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 04/25/2022] [Indexed: 11/13/2022] Open
Abstract
Vitamin D (VD) deficiency during pregnancy and early brain development is an important environmental risk factor for autism spectrum disorder (ASD). Its specific mechanism of action is still unclear. However, one study on the correlation between metabolomics and VD levels in children with ASD has found that the whole-blood arginine (Arg) levels of children with ASD are significantly negatively correlated with serum VD levels, suggesting that the effect of VD on ASD may be related to the signaling pathway involving Arg. Arg is a precursor of nitric oxide (NO), and changes in its levels most directly affect NO levels and signal transduction pathways. NO, a biologically active free radical, is both a neurotransmitter and a neuromodulator in the central nervous system and is related to the pathogeneses of various neurological diseases. The NO signaling pathway is not only affected by VD levels but also closely related to ASD through a series of mechanisms, such as neurotransmitter imbalance, immune disorders, and oxidative stress. Therefore, the effect of VD on ASD may be achieved via regulation of the NO signaling pathway. The current review discusses the relationship among VD, NO, and ASD as suggested by a large body of evidence in the literature in an effort to provide clues for researchers on the pathogenesis of ASD and the mechanism of VD's impact on ASD.
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Affiliation(s)
- Bing Wang
- Department of Nutrition and Food Hygiene, School of Public Health, Jilin University, Changchun, China.,Department of Developmental and Behavioral Pediatrics, First Affiliated Hospital of Jilin University, Changchun, China
| | - HanYu Dong
- Department of Developmental and Behavioral Pediatrics, First Affiliated Hospital of Jilin University, Changchun, China
| | - HongHua Li
- Department of Developmental and Behavioral Pediatrics, First Affiliated Hospital of Jilin University, Changchun, China
| | - XiaoJing Yue
- Department of Developmental and Behavioral Pediatrics, First Affiliated Hospital of Jilin University, Changchun, China
| | - Lin Xie
- Department of Nutrition and Food Hygiene, School of Public Health, Jilin University, Changchun, China
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16
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Lai R, Hsu Y, Shie F, Huang C, Chen M, Juang J. Non-genomic rewiring of vitamin D receptor to p53 as a key to Alzheimer's disease. Aging Cell 2021; 20:e13509. [PMID: 34725922 PMCID: PMC8672786 DOI: 10.1111/acel.13509] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 09/03/2021] [Accepted: 10/17/2021] [Indexed: 01/14/2023] Open
Abstract
Observational epidemiological studies have associated vitamin D deficiency with Alzheimer's disease (AD). However, whether vitamin D deficiency would result in some impacts on the vitamin D binding receptor (VDR) remains to be characterized in AD. Vitamin D helps maintain adult brain health genomically through binding with and activating a VDR/retinoid X receptor (RXR) transcriptional complex. Thus, we investigated the role of VDR in AD using postmortem human brains, APP/PS1 mice, and cell cultures. Intriguingly, although vitamin D was decreased in AD patients and mice, hippocampal VDR levels were inversely increased. The abnormally increased levels of VDR were found to be colocalized with Aβ plaques, gliosis and autophagosomes, implicating a non-genomic activation of VDR in AD pathogenesis. Mechanistic investigation revealed that Aβ upregulated VDR without its canonical ligand vitamin D and switched its heterodimer binding-partner from RXR to p53. The VDR/p53 complex localized mostly in the cytosol, increased neuronal autophagy and apoptosis. Chemically inhibiting p53 switched VDR back to RXR, reversing amyloidosis and cognitive impairment in AD mice. These results suggest a non-genomic rewiring of VDR to p53 is key for the progression of AD, and thus VDR/p53 pathway might be targeted to treat people with AD.
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Affiliation(s)
- Rai‐Hua Lai
- Institute of Molecular and Genomic MedicineNational Health Research InstitutesZhunanTaiwan
| | - Yueh‐Ying Hsu
- Institute of Molecular and Genomic MedicineNational Health Research InstitutesZhunanTaiwan
| | - Feng‐Shiun Shie
- Division of Mental Health and Addiction MedicineNational Health Research InstitutesZhunanTaiwan
| | - Che‐Ching Huang
- Institute of Molecular and Genomic MedicineNational Health Research InstitutesZhunanTaiwan
- Graduate Program of Biotechnology in MedicineDepartment of Life SciencesNTHU & NHRINational Tsing Hua UniversityHsinchuTaiwan
| | - Mei‐Hsin Chen
- Institute of Molecular and Genomic MedicineNational Health Research InstitutesZhunanTaiwan
| | - Jyh‐Lyh Juang
- Institute of Molecular and Genomic MedicineNational Health Research InstitutesZhunanTaiwan
- Ph.D. Program for AgingChina Medical UniversityTaichungTaiwan
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17
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Lin YW, Fang CH, Liang YJ, Liao HH, Lin FH. Modified Low-Temperature Extraction Method for Isolation of Bletilla striata Polysaccharide as Antioxidant for the Prevention of Alzheimer's Disease. Int J Mol Sci 2021; 22:12760. [PMID: 34884565 PMCID: PMC8657612 DOI: 10.3390/ijms222312760] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 10/30/2021] [Accepted: 11/19/2021] [Indexed: 12/14/2022] Open
Abstract
Amyloid-β (Aβ) peptides play a key role in Alzheimer's disease (AD), the most common type of dementia. In this study, a polysaccharide from Bletilla striata (BSP), with strong antioxidant and anti-inflammatory properties, was extracted using a low-temperature method and tested for its efficacy against AD, in vitro using N2a and BV-2 cells, and in vivo using an AD rat model. The characterization of the extracted BSP for its molecular structure and functional groups demonstrated the effectiveness of the modified method for retaining its bioactivity. In vitro, BSP reduced by 20% reactive oxygen species (ROS) levels in N2a cells (p = 0.0082) and the expression levels of inflammation-related genes by 3-fold TNF-α (p = 0.0048), 4-fold IL-6 (p = 0.0019), and 2.5-fold IL-10 (p = 0.0212) in BV-2 cells treated with Aβ fibrils. In vivo, BSP recovered learning memory, ameliorated morphological damage in the hippocampus and cortex, and reduced the expression of the β-secretase protein in AlCl3-induced AD rats. Collectively, these findings demonstrated the efficacy of BSP for preventing and alleviating the effects of AD.
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Affiliation(s)
- Yi-Wen Lin
- Institute of Biomedical Engineering, National Taiwan University, Taipei 10051, Taiwan; (Y.-W.L.); (Y.-J.L.); (H.-H.L.)
| | - Chih-Hsiang Fang
- Trauma and Emergency Center, China Medical University Hospital, Taichung City 404332, Taiwan;
| | - Ya-Jyun Liang
- Institute of Biomedical Engineering, National Taiwan University, Taipei 10051, Taiwan; (Y.-W.L.); (Y.-J.L.); (H.-H.L.)
| | - Hong-Hsiang Liao
- Institute of Biomedical Engineering, National Taiwan University, Taipei 10051, Taiwan; (Y.-W.L.); (Y.-J.L.); (H.-H.L.)
| | - Feng-Huei Lin
- Institute of Biomedical Engineering, National Taiwan University, Taipei 10051, Taiwan; (Y.-W.L.); (Y.-J.L.); (H.-H.L.)
- Institute of Biomedical Engineering and Nanomedicine Research, National Health Research Institutes, No. 35, Keyan Road, Miaoli County 35053, Taiwan
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18
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Rai SN, Singh P, Steinbusch HW, Vamanu E, Ashraf G, Singh MP. The Role of Vitamins in Neurodegenerative Disease: An Update. Biomedicines 2021; 9:1284. [PMID: 34680401 PMCID: PMC8533313 DOI: 10.3390/biomedicines9101284] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 09/14/2021] [Accepted: 09/15/2021] [Indexed: 02/06/2023] Open
Abstract
Acquiring the recommended daily allowance of vitamins is crucial for maintaining homeostatic balance in humans and other animals. A deficiency in or dysregulation of vitamins adversely affects the neuronal metabolism, which may lead to neurodegenerative diseases. In this article, we discuss how novel vitamin-based approaches aid in attenuating abnormal neuronal functioning in neurodegeneration-based brain diseases such as Alzheimer's disease, Parkinson's disease, Huntington's disease, Amyotrophic lateral sclerosis, and Prion disease. Vitamins show their therapeutic activity in Parkinson's disease by antioxidative and anti-inflammatory activity. In addition, different water- and lipid-soluble vitamins have also prevented amyloid beta and tau pathology. On the other hand, some results also show no correlation between vitamin action and the prevention of neurodegenerative diseases. Some vitamins also exhibit toxic activity too. This review discusses both the beneficial and null effects of vitamin supplementation for neurological disorders. The detailed mechanism of action of both water- and lipid-soluble vitamins is addressed in the manuscript. Hormesis is also an essential factor that is very helpful to determine the effective dose of vitamins. PubMed, Google Scholar, Web of Science, and Scopus were employed to conduct the literature search of original articles, review articles, and meta-analyses.
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Affiliation(s)
- Sachchida Nand Rai
- Centre of Biotechnology, University of Allahabad, Prayagraj 211002, India;
| | - Payal Singh
- Department of Zoology, MMV, Banaras Hindu University, Varanasi 221005, India;
| | - Harry W.M. Steinbusch
- Department of Cellular Neuroscience, Faculty of Health, Medicine & Life Sciences, Maastricht University, 6211 LK Maastricht, The Netherlands;
- Department of Cognitive Neuroscience, DGIST, Daegu 42988, Korea
| | - Emanuel Vamanu
- Faculty of Biotechnology, The University of Agronomic Science and Veterinary Medicine, 59 Marasti blvd, 1 District, 011464 Bucharest, Romania
| | - Ghulam Ashraf
- Pre-Clinical Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mohan Prasad Singh
- Centre of Biotechnology, University of Allahabad, Prayagraj 211002, India;
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19
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Willems S, Zaienne D, Merk D. Targeting Nuclear Receptors in Neurodegeneration and Neuroinflammation. J Med Chem 2021; 64:9592-9638. [PMID: 34251209 DOI: 10.1021/acs.jmedchem.1c00186] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Nuclear receptors, also known as ligand-activated transcription factors, regulate gene expression upon ligand signals and present as attractive therapeutic targets especially in chronic diseases. Despite the therapeutic relevance of some nuclear receptors in various pathologies, their potential in neurodegeneration and neuroinflammation is insufficiently established. This perspective gathers preclinical and clinical data for a potential role of individual nuclear receptors as future targets in Alzheimer's disease, Parkinson's disease, and multiple sclerosis, and concomitantly evaluates the level of medicinal chemistry targeting these proteins. Considerable evidence suggests the high promise of ligand-activated transcription factors to counteract neurodegenerative diseases with a particularly high potential of several orphan nuclear receptors. However, potent tools are lacking for orphan receptors, and limited central nervous system exposure or insufficient selectivity also compromises the suitability of well-studied nuclear receptor ligands for functional studies. Medicinal chemistry efforts are needed to develop dedicated high-quality tool compounds for the therapeutic validation of nuclear receptors in neurodegenerative pathologies.
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Affiliation(s)
- Sabine Willems
- Institute of Pharmaceutical Chemistry, Goethe University Frankfurt, Max-von-Laue-Strasse 9, 60438 Frankfurt, Germany
| | - Daniel Zaienne
- Institute of Pharmaceutical Chemistry, Goethe University Frankfurt, Max-von-Laue-Strasse 9, 60438 Frankfurt, Germany
| | - Daniel Merk
- Institute of Pharmaceutical Chemistry, Goethe University Frankfurt, Max-von-Laue-Strasse 9, 60438 Frankfurt, Germany
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20
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Precision Nutrition for Alzheimer's Prevention in ApoE4 Carriers. Nutrients 2021; 13:nu13041362. [PMID: 33921683 PMCID: PMC8073598 DOI: 10.3390/nu13041362] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 04/13/2021] [Accepted: 04/16/2021] [Indexed: 12/14/2022] Open
Abstract
The ApoE4 allele is the most well-studied genetic risk factor for Alzheimer’s disease, a condition that is increasing in prevalence and remains without a cure. Precision nutrition targeting metabolic pathways altered by ApoE4 provides a tool for the potential prevention of disease. However, no long-term human studies have been conducted to determine effective nutritional protocols for the prevention of Alzheimer’s disease in ApoE4 carriers. This may be because relatively little is yet known about the precise mechanisms by which the genetic variant confers an increased risk of dementia. Fortunately, recent research is beginning to shine a spotlight on these mechanisms. These new data open up the opportunity for speculation as to how carriers might ameliorate risk through lifestyle and nutrition. Herein, we review recent discoveries about how ApoE4 differentially impacts microglia and inflammatory pathways, astrocytes and lipid metabolism, pericytes and blood–brain barrier integrity, and insulin resistance and glucose metabolism. We use these data as a basis to speculate a precision nutrition approach for ApoE4 carriers, including a low-glycemic index diet with a ketogenic option, specific Mediterranean-style food choices, and a panel of seven nutritional supplements. Where possible, we integrate basic scientific mechanisms with human observational studies to create a more complete and convincing rationale for this precision nutrition approach. Until recent research discoveries can be translated into long-term human studies, a mechanism-informed practical clinical approach may be useful for clinicians and patients with ApoE4 to adopt a lifestyle and nutrition plan geared towards Alzheimer’s risk reduction.
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21
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Zelzer S, Hofer E, Meinitzer A, Fritz-Petrin E, Simstich S, Goessler W, Schmidt R, Herrmann M. Association of vitamin D metabolites with cognitive function and brain atrophy in elderly individuals - the Austrian stroke prevention study. Aging (Albany NY) 2021; 13:9455-9467. [PMID: 33825696 PMCID: PMC8064143 DOI: 10.18632/aging.202930] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 03/27/2021] [Indexed: 12/11/2022]
Abstract
BACKGROUND Vitamin D is a well-established regulator of calcium and phosphate metabolism that has neurotrophic and neuroprotective properties. Deficiency of vitamin D has been proposed to promote cognitive dysfunction and brain atrophy. However, existing studies provide inconsistent results. Here we aimed to investigate the association between vitamin D metabolites, cognitive function and brain atrophy in a cohort of well-characterized community-dwelling elderly individuals with normal neurological status and without history of stroke and dementia. METHODS 25(OH)D3, 25(OH)D2 and 24,25(OH)2D3 were measured by liquid-chromatography tandem mass-spectrometry in serum samples from 390 community-dwelling elderly individuals. All participants underwent thorough neuropsychiatric tests capturing memory, executive function and visuopractical skills. In 139 of these individuals, MRI of the brain was performed in order to capture neurodegenerative and vascular changes. RESULTS Total 25(OH)D (ß=0.003, 0.037), 24,25(OH)2D3 (ß=0.0456, p=0.010) and vitamin D metabolite ratio (VMR) (ß=0.0467, p=0.012) were significantly related to memory function. Adjustment for multiple testing weakened these relationships, but trends (p≤0.10) remained. 24,25(OH)2D3 and VMR showed similar trends also for visuopractical skills and global cognitive function. No significant relationships existed between vitamin D metabolites and MRI derived indices of neurodegeneration and vascular changes. Sub-group analyses of individuals with low concentrations of 25(OH)D and 24,25(OH)2D3 showed significantly worse memory function compared to individuals with normal or high concentrations. CONCLUSIONS Vitamin D deficient individuals appear to have a modest reduction of memory function without structural brain atrophy. Future studies should explore if vitamin D supplementation can improve cognitive function.
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Affiliation(s)
- Sieglinde Zelzer
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Austria
| | - Edith Hofer
- Clinical Division of Neurogeriatrics, Department of Neurology, Medical University of Graz, Austria
- Institute for Medical Informatics, Statistics and Documentation, Medical University of Graz, Austria
| | - Andreas Meinitzer
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Austria
| | - Eva Fritz-Petrin
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Austria
| | - Sebastian Simstich
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Austria
| | | | - Reinhold Schmidt
- Clinical Division of Neurogeriatrics, Department of Neurology, Medical University of Graz, Austria
| | - Markus Herrmann
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Austria
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22
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Xiao QY, Ye TY, Wang XL, Han L, Wang TX, Qi DM, Cheng XR, Wang SQ. A network pharmacology-based study on key pharmacological pathways and targets of Qi Fu Yin acting on Alzheimer's disease. Exp Gerontol 2021; 149:111336. [PMID: 33785395 DOI: 10.1016/j.exger.2021.111336] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 03/03/2021] [Accepted: 03/25/2021] [Indexed: 12/26/2022]
Abstract
BACKGROUND Alzheimer's disease (AD) is a central nervous system (CNS) disease characterized by progressive cognitive dysfunction and memory loss. Qi Fu Yin is mainly used to treat dementia, particularly AD, in the clinic, but its comprehensive mechanisms are not known. OBJECTIVE In this research, we aimed to investigate the mechanisms of Qi Fu Yin in AD by network pharmacology and molecular docking. METHODS First, the chemical constituents in Qi Fu Yin were obtained from five databases and classified according to their structure. Targets of chemical constituents and AD-related targets were also collected from the databases. Then, overlapping genes between Qi Fu Yin and AD were identified by intersection analysis. MetaCore was used to gather enrichment information. Combination synergy analysis was performed by Cytoscape. After ligand-receptor docking, the binding affinity was verified by ADP-Glo™ kinase assay and fluorescence resonance energy transfer (FRET) assay. RESULTS We found 12 classes with 977 components in Qi Fu Yin. A total of 511 compounds and 577 potential target proteins in Qi Fu Yin were found to be related to AD. The pathways of Qi Fu Yin in AD included oxidative stress and immune response. There was the best binding affinity between 11 pairs of genes and compounds. Furthermore, CDK5 was inhibited by nepetin with an IC50 of 3.172 μM and kaempferol with an IC50 of 2.659 μM. Ceanothic acid and 18 beta-glycyrrhetinic acid inhibited GSK3β, and the IC50 values were 8.732 μM and 8.06 μM, respectively. CONCLUSION Qi Fu Yin might alleviate Tau hyperphosphorylation by nepetin, kaempferol, ceanothic acid and 18 beta-glycyrrhetinic acid.
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Affiliation(s)
- Qiu-Yue Xiao
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Tian-Yuan Ye
- Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Xiao-Long Wang
- Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Lu Han
- Beijing Institute of Pharmacology and Toxicology, State Key Laboratory of Toxicology and Medical Countermeasures, Beijing 100850, China
| | | | - Dong-Mei Qi
- Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Xiao-Rui Cheng
- Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan 250355, China.
| | - Sheng-Qi Wang
- Beijing Institute of Radiation Medicine, Beijing 100850, China.
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Kumar S, Chandnani A, Aung NH, Shahid S, Bukhari D, Shahzad S, Kumar B, Memon S. Alzheimer's Disease and Its Association With Bone Health: A Case-Control Study. Cureus 2021; 13:e13772. [PMID: 33842148 PMCID: PMC8027098 DOI: 10.7759/cureus.13772] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/08/2021] [Indexed: 11/05/2022] Open
Abstract
Introduction Alzheimer's disease is associated with low bone mineral density. Various studies have linked early-onset Alzheimer's disease with bone health. In this study, we will determine the association between bone health and recently diagnosed Alzheimer's disease in the local population. Methods This case-control study was conducted at the neurology unit from April 2019 to Sept 2019. One hundred and fifty (150) Alzheimer's patients with recently (within the last six months) confirmed diagnoses, based on clinical symptoms, mental status, and computed tomography (CT) scan, were included from the neurology outpatient department. The gender and age-matched 150 healthy participants were included in the study as the reference group. Various parameters of bone health and mental status were measured. Results Participants with Alzheimer's had a significantly lower level of serum vitamin D (15.2 ± 4.2 ng/mL vs. 27.5 ± 8.1 ng/mL, p-value: < 0.0001) and lower level of serum osteocalcin (4.3 ± 1.7 ng/L vs. 5.6 ± 2.0 ng/L, p-value: < 0.0001). Participants with Alzheimer's disease had more people with T-score ≤ -2.5 as compared to the general population (52.0% vs. 16.6%, p-value <0.0001). Conclusion Alzheimer's disease is associated with poor bone health as compared to the general population of the same age. Bone health can be an important parameter to screen patients at risk of Alzheimer's disease. The management of Alzheimer's disease should include a regular assessment of bone health, and the treatment plan should include therapies to improve bone health.
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Affiliation(s)
- Sameet Kumar
- Internal Medicine, Chandka Medical College, Karachi, PAK
| | - Aakash Chandnani
- Internal Medicine, Jinnah Sindh Medical University, Karachi, PAK
| | - Norah H Aung
- Health Sciences, Western Illinois University, Macomb, USA
- Internal Medicine, University of Medicine 1, Yangon, MMR
| | - Simra Shahid
- Medicine, Jinnah Sindh Medical University, Karachi, PAK
| | - Dua Bukhari
- Internal Medicine, Jinnah Sindh Medical University, Karachi, PAK
| | - Sania Shahzad
- Internal Medicine, Jinnah Postgraduate Medical Centre, Karachi, PAK
| | - Besham Kumar
- Internal Medicine, Jinnah Postgraduate Medical Centre, Karachi, PAK
| | - Sidra Memon
- Internal Medicine, Jinnah Sindh Medical University, Karachi, PAK
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Bivona G, Lo Sasso B, Gambino CM, Giglio RV, Scazzone C, Agnello L, Ciaccio M. The Role of Vitamin D as a Biomarker in Alzheimer's Disease. Brain Sci 2021; 11:brainsci11030334. [PMID: 33800891 PMCID: PMC8000099 DOI: 10.3390/brainsci11030334] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 03/02/2021] [Accepted: 03/02/2021] [Indexed: 01/01/2023] Open
Abstract
Vitamin D and cognition is a popular association, which led to a remarkable body of literature data in the past 50 years. The brain can synthesize, catabolize, and receive Vitamin D, which has been proved to regulate many cellular processes in neurons and microglia. Vitamin D helps synaptic plasticity and neurotransmission in dopaminergic neural circuits and exerts anti-inflammatory and neuroprotective activities within the brain by reducing the synthesis of pro-inflammatory cytokines and the oxidative stress load. Further, Vitamin D action in the brain has been related to the clearance of amyloid plaques, which represent a feature of Alzheimer Disease (AD), by the immune cell. Based on these considerations, many studies have investigated the role of circulating Vitamin D levels in patients affected by a cognitive decline to assess Vitamin D’s eventual role as a biomarker or a risk factor in AD. An association between low Vitamin D levels and the onset and progression of AD has been reported, and some interventional studies to evaluate the role of Vitamin D in preventing AD onset have been performed. However, many pitfalls affected the studies available, including substantial discrepancies in the methods used and the lack of standardized data. Despite many studies, it remains unclear whether Vitamin D can have a role in cognitive decline and AD. This narrative review aims to answer two key questions: whether Vitamin D can be used as a reliable tool for diagnosing, predicting prognosis and response to treatment in AD patients, and whether it is a modifiable risk factor for preventing AD onset.
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Affiliation(s)
- Giulia Bivona
- Institute of Clinical Biochemistry, Clinical Molecular Medicine and Laboratory Medicine, Department of Biomedicine, Neurosciences and Advanced Diagnostics, University of Palermo, 90127 Palermo, Italy; (G.B.); (B.L.S.); (C.M.G.); (R.V.G.); (C.S.); (L.A.)
| | - Bruna Lo Sasso
- Institute of Clinical Biochemistry, Clinical Molecular Medicine and Laboratory Medicine, Department of Biomedicine, Neurosciences and Advanced Diagnostics, University of Palermo, 90127 Palermo, Italy; (G.B.); (B.L.S.); (C.M.G.); (R.V.G.); (C.S.); (L.A.)
- Department of Laboratory Medicine, AOUP “P. Giaccone”, 90127 Palermo, Italy
| | - Caterina Maria Gambino
- Institute of Clinical Biochemistry, Clinical Molecular Medicine and Laboratory Medicine, Department of Biomedicine, Neurosciences and Advanced Diagnostics, University of Palermo, 90127 Palermo, Italy; (G.B.); (B.L.S.); (C.M.G.); (R.V.G.); (C.S.); (L.A.)
| | - Rosaria Vincenza Giglio
- Institute of Clinical Biochemistry, Clinical Molecular Medicine and Laboratory Medicine, Department of Biomedicine, Neurosciences and Advanced Diagnostics, University of Palermo, 90127 Palermo, Italy; (G.B.); (B.L.S.); (C.M.G.); (R.V.G.); (C.S.); (L.A.)
| | - Concetta Scazzone
- Institute of Clinical Biochemistry, Clinical Molecular Medicine and Laboratory Medicine, Department of Biomedicine, Neurosciences and Advanced Diagnostics, University of Palermo, 90127 Palermo, Italy; (G.B.); (B.L.S.); (C.M.G.); (R.V.G.); (C.S.); (L.A.)
| | - Luisa Agnello
- Institute of Clinical Biochemistry, Clinical Molecular Medicine and Laboratory Medicine, Department of Biomedicine, Neurosciences and Advanced Diagnostics, University of Palermo, 90127 Palermo, Italy; (G.B.); (B.L.S.); (C.M.G.); (R.V.G.); (C.S.); (L.A.)
| | - Marcello Ciaccio
- Institute of Clinical Biochemistry, Clinical Molecular Medicine and Laboratory Medicine, Department of Biomedicine, Neurosciences and Advanced Diagnostics, University of Palermo, 90127 Palermo, Italy; (G.B.); (B.L.S.); (C.M.G.); (R.V.G.); (C.S.); (L.A.)
- Department of Laboratory Medicine, AOUP “P. Giaccone”, 90127 Palermo, Italy
- Correspondence:
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Bathini M, Raghushaker CR, Mahato KK. The Molecular Mechanisms of Action of Photobiomodulation Against Neurodegenerative Diseases: A Systematic Review. Cell Mol Neurobiol 2020; 42:955-971. [PMID: 33301129 PMCID: PMC8942959 DOI: 10.1007/s10571-020-01016-9] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Accepted: 11/18/2020] [Indexed: 01/08/2023]
Abstract
Neurodegenerative diseases might be slow but relentless, as we continue to fail in treating or delaying their progression. Given the complexity in the pathogenesis of these diseases, a broad-acting approach like photobiomodulation can prove promising. Photobiomodulation (PBM) uses red and infrared light for therapeutic benefits, working by stimulating growth and proliferation. The implications of photobiomodulation have been studied in several neurodegenerative disease models. It has been shown to improve cell survival, decrease apoptosis, alleviate oxidative stress, suppress inflammation, and rescue mitochondrial function. In in vivo models, it has reportedly preserved motor and cognitive skills. Beyond mitochondrial stimulation, the molecular mechanisms by which photobiomodulation protects against neurodegeneration have not been very well studied. This review has systematically been undertaken to study the effects of photobiomodulation at a molecular level and identify the different biochemical pathways and molecular changes in the process. The data showed the involvement of pathways like extracellular signal-regulated kinase (ERK), mitogen-activated protein kinase (MAPK), and protein kinase B (Akt). In addition, the expression of several genes and proteins playing different roles in the disease mechanisms was found to be influenced by PBM, such as neurotrophic factors and secretases. Studying the literature indicated that PBM can be translated to a potential therapeutic tool, acting through a spectrum of mechanisms that work together to decelerate disease progression in the organism, which is difficult to achieve through pharmacological interventions.
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Affiliation(s)
- Mayukha Bathini
- Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
- Department of Biophysics, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Chandavalli Ramappa Raghushaker
- Department of Biophysics, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Krishna Kishore Mahato
- Department of Biophysics, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India.
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26
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Tobore TO. On the Etiopathogenesis and Pathophysiology of Alzheimer's Disease: A Comprehensive Theoretical Review. J Alzheimers Dis 2020; 68:417-437. [PMID: 30775973 DOI: 10.3233/jad-181052] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Alzheimers' disease (AD) is the most common cause of dementia, with an estimated 5 million new cases occurring annually. Among the elderly, AD shortens life expectancy, results in disability, decreases quality of life, and ultimately, leads to institutionalization. Despite extensive research in the last few decades, its heterogeneous pathophysiology and etiopathogenesis have made it difficult to develop an effective treatment and prevention strategy. Aging is the biggest risk factor for AD and evidence suggest that the total number of older people in the population is going to increase astronomically in the next decades. Also, there is evidence that air pollution and increasing income inequality may result in higher incidence and prevalence of AD. This makes the need for a comprehensive understanding of the etiopathogenesis and pathophysiology of the disease extremely critical. In this paper, a quintuple framework of thyroid dysfunction, vitamin D deficiency, sex hormones, and mitochondria dysfunction and oxidative stress are used to provide a comprehensive description of AD etiopathogenesis and pathophysiology. The individual role of each factor, their synergistic and genetic interactions, as well as the limitations of the framework are discussed.
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1,25(OH) 2D 3 Alleviates Aβ(25-35)-Induced Tau Hyperphosphorylation, Excessive Reactive Oxygen Species, and Apoptosis Through Interplay with Glial Cell Line-Derived Neurotrophic Factor Signaling in SH-SY5Y Cells. Int J Mol Sci 2020; 21:ijms21124215. [PMID: 32545801 PMCID: PMC7352552 DOI: 10.3390/ijms21124215] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 06/09/2020] [Accepted: 06/11/2020] [Indexed: 01/14/2023] Open
Abstract
Amyloid beta (Aβ) accumulation in the brain is one of the major pathological features of Alzheimer's disease. The active form of vitamin D (1,25(OH)2D3), which acts via its nuclear hormone receptor, vitamin D receptor (VDR), has been implicated in the treatment of Aβ pathology, and is thus considered as a neuroprotective agent. However, its underlying molecular mechanisms of action are not yet fully understood. Here, we aim to investigate whether the molecular mechanisms of 1,25(OH)2D3 in ameliorating Aβ toxicity involve an interplay of glial cell line-derived neurotrophic factor (GDNF)-signaling in SH-SY5Y cells. Cells were treated with Aβ(25-35) as the source of toxicity, followed by the addition of 1,25(OH)2D3 with or without the GDNF inhibitor, heparinase III. The results show that 1,25(OH)2D3 modulated Aβ-induced reactive oxygen species, apoptosis, and tau protein hyperphosphorylation in SH-SY5Y cells. Additionally, 1,25(OH)2D3 restored the decreasing GDNF and the inhibited phosphorylation of the phosphatidylinositol 3 kinase (PI3K)/protein kinase B (Akt)/glycogen synthase kinase-3β (GSK-3β) protein expressions. In the presence of heparinase III, these damaging effects evoked by Aβ were not abolished by 1,25(OH)2D3. It appears 1,25(OH)2D3 is beneficial for the alleviation of Aβ neurotoxicity, and it might elicit its neuroprotection against Aβ neurotoxicity through an interplay with GDNF-signaling.
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28
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Schmukler E, Pinkas‐Kramarski R. Autophagy induction in the treatment of Alzheimer's disease. Drug Dev Res 2020; 81:184-193. [DOI: 10.1002/ddr.21605] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 09/05/2019] [Accepted: 09/10/2019] [Indexed: 02/06/2023]
Affiliation(s)
- Eran Schmukler
- Department of NeurobiologySchool of Neurobiology, Biochemistry and Biophysics, the George S. Wise Faculty of Life Sciences, Tel‐Aviv University Ramat‐Aviv Israel
| | - Ronit Pinkas‐Kramarski
- Department of NeurobiologySchool of Neurobiology, Biochemistry and Biophysics, the George S. Wise Faculty of Life Sciences, Tel‐Aviv University Ramat‐Aviv Israel
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29
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Camara AB, Brandao IA. The Role of Vitamin D and Sunlight Incidence in Cancer. Anticancer Agents Med Chem 2020; 19:1418-1436. [PMID: 30864510 DOI: 10.2174/1389557519666190312123212] [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: 10/24/2018] [Revised: 11/19/2018] [Accepted: 02/13/2019] [Indexed: 12/17/2022]
Abstract
BACKGROUND Vitamin D (VD) deficiency affects individuals of different ages in many countries. VD deficiency may be related to several diseases, including cancer. OBJECTIVE This study aimed to review the relationship between VD deficiency and cancer. METHODS We describe the proteins involved in cancer pathogenesis and how those proteins can be influenced by VD deficiency. We also investigated a relationship between cancer death rate and solar radiation. RESULTS We found an increased bladder cancer, breast cancer, colon-rectum cancer, lung cancer, oesophagus cancer, oral cancer, ovary cancer, pancreas cancer, skin cancer and stomach cancer death rate in countries with low sunlight. It was also observed that amyloid precursor protein, ryanodine receptor, mammalian target of rapamycin complex 1, and receptor for advanced glycation end products are associated with a worse prognosis in cancer. While the Klotho protein and VD receptor are associated with a better prognosis in the disease. Nfr2 is associated with both worse and better prognosis in cancer. CONCLUSION The literature suggests that VD deficiency might be involved in cancer progression. According to sunlight data, we can conclude that countries with low average sunlight have high cancers death rate. New studies involving transcriptional and genomic data in combination with VD measurement in long-term experiments are required to establish new relationships between VD and cancer.
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Affiliation(s)
- Alice B Camara
- Department of Biophysics and Pharmacology, Bioscience Center, Federal University of Rio Grande do Norte, 59064-741, Natal/RN, Brazil
| | - Igor A Brandao
- Metrópole Digital Institute, Federal University of Rio Grande do Norte, 59078-970, Natal/RN, Brazil
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30
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Ghosh S, Durgvanshi S, Agarwal S, Raghunath M, Sinha JK. Current Status of Drug Targets and Emerging Therapeutic Strategies in the Management of Alzheimer's Disease. Curr Neuropharmacol 2020; 18:883-903. [PMID: 32348223 PMCID: PMC7569315 DOI: 10.2174/1570159x18666200429011823] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 04/09/2020] [Accepted: 04/24/2020] [Indexed: 12/22/2022] Open
Abstract
Alzheimer's disease (AD) is a chronic neurodegenerative disease affecting the elderly. AD is associated with a progressive decline in memory and cognitive abilities, drastic changes in behavioural patterns and other psychiatric manifestations. It leads to a significant decline in the quality of life at personal, household as well as national level. Although AD was described about hundred years back and multiple theories have been proposed, its exact pathophysiology is unknown. There is no cure for AD and the life expectancy of AD patients remains low at 3-9 years. An accurate understanding of the molecular mechanism(s) involved in the pathogenesis of AD is imperative to devise a successful treatment strategy. This review explains and summarises the current understanding of different therapeutic strategies based on various molecular pathways known to date. Different strategies based on anti-amyloid pathology, glutamatergic pathway, anti-tau, neuroprotection through neurotrophic factors and cholinergic neurotransmission have been discussed. Further, the use of anti-inflammatory drugs, nutraceuticals, and dietary interventions has also been explained in the management of AD. It further describes different pharmacological and dietary interventions being used in treating and/or managing AD. Additionally, this article provides a thorough review of the literature for improving the therapeutic paradigm of AD.
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Affiliation(s)
| | | | | | | | - Jitendra Kumar Sinha
- Address correspondence to this author at the Amity Institute of Neuropsychology and Neurosciences (AINN), Amity University UP, Sector-125, Noida 201303, India; Tel: +91-120-4392971, +91-8919679822; Emails: ,
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31
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Çubukçu M, Acı R, Müderrisoğlu S. Evaluation of Vitamin D Levels According to Age, Sex and Seasonal Characteristics in Samsun. ANKARA MEDICAL JOURNAL 2019. [DOI: 10.17098/amj.652002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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32
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Fernández-Sanz P, Ruiz-Gabarre D, García-Escudero V. Modulating Effect of Diet on Alzheimer's Disease. Diseases 2019; 7:E12. [PMID: 30691140 PMCID: PMC6473547 DOI: 10.3390/diseases7010012] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 01/17/2019] [Accepted: 01/21/2019] [Indexed: 12/13/2022] Open
Abstract
As life expectancy is growing, neurodegenerative disorders, such as Alzheimer's disease, are increasing. This disease is characterised by the accumulation of intracellular neurofibrillary tangles formed by hyperphosphorylated tau protein, senile plaques composed of an extracellular deposit of β-amyloid peptide (Aβ), and neuronal loss. This is accompanied by deficient mitochondrial function, increased oxidative stress, altered inflammatory response, and autophagy process impairment. The present study gathers scientific evidence that demonstrates that specific nutrients exert a direct effect on both Aβ production and Tau processing and their elimination by autophagy activation. Likewise, certain nutrients can modulate the inflammatory response and the oxidative stress related to the disease. However, the extent to which these effects come with beneficial clinical outcomes remains unclear. Even so, several studies have shown the benefits of the Mediterranean diet on Alzheimer's disease, due to its richness in many of these compounds, to which can be attributed their neuroprotective properties due to the pleiotropic effect they show on the aforementioned processes. These indications highlight the potential role of adequate dietary recommendations for clinical management of both Alzheimer's diagnosed patients and those in risk of developing it, emphasising once again the importance of diet on health.
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Affiliation(s)
- Paloma Fernández-Sanz
- Department of Anatomy, Histology and Neuroscience, School of Medicine, Universidad Autónoma de Madrid, 28029 Madrid, Spain.
| | - Daniel Ruiz-Gabarre
- Department of Anatomy, Histology and Neuroscience, School of Medicine, Universidad Autónoma de Madrid, 28029 Madrid, Spain.
| | - Vega García-Escudero
- Department of Anatomy, Histology and Neuroscience, School of Medicine, Universidad Autónoma de Madrid, 28029 Madrid, Spain.
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Vitamin D in Neurological Diseases: A Rationale for a Pathogenic Impact. Int J Mol Sci 2018; 19:ijms19082245. [PMID: 30065237 PMCID: PMC6121649 DOI: 10.3390/ijms19082245] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 07/25/2018] [Accepted: 07/26/2018] [Indexed: 12/22/2022] Open
Abstract
It is widely known that vitamin D receptors have been found in neurons and glial cells, and their highest expression is in the hippocampus, hypothalamus, thalamus and subcortical grey nuclei, and substantia nigra. Vitamin D helps the regulation of neurotrophin, neural differentiation, and maturation, through the control operation of growing factors synthesis (i.e., neural growth factor [NGF] and glial cell line-derived growth factor (GDNF), the trafficking of the septohippocampal pathway, and the control of the synthesis process of different neuromodulators (such as acetylcholine [Ach], dopamine [DA], and gamma-aminobutyric [GABA]). Based on these assumptions, we have written this review to summarize the potential role of vitamin D in neurological pathologies. This work could be titanic and the results might have been very fuzzy and even incoherent had we not conjectured to taper our first intentions and devoted our interests towards three mainstreams, demyelinating pathologies, vascular syndromes, and neurodegeneration. As a result of the lack of useful therapeutic options, apart from the disease-modifying strategies, the role of different risk factors should be investigated in neurology, as their correction may lead to the improvement of the cerebral conditions. We have explored the relationships between the gene-environmental influence and long-term vitamin D deficiency, as a risk factor for the development of different types of neurological disorders, along with the role and the rationale of therapeutic trials with vitamin D implementation.
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34
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Liang Q, Cai C, Duan D, Hu X, Hua W, Jiang P, Zhang L, Xu J, Gao Z. Postnatal Vitamin D Intake Modulates Hippocampal Learning and Memory in Adult Mice. Front Neurosci 2018; 12:141. [PMID: 29666565 PMCID: PMC5891641 DOI: 10.3389/fnins.2018.00141] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 02/21/2018] [Indexed: 01/27/2023] Open
Abstract
Vitamin D (VD) is a neuroactive steroid crucial for brain development, function and homeostasis. Its deficiency is associated with numerous brain conditions. As such, VD and its variants are routinely taken by a broad of groups with/without known VD deficiency. In contrast, the harmful effects of VD overdose have been poorly studied. Similarly, the developmental stage-specific VD deficiency and overdose have been rarely explored. In the present work, we showed that postnatal VD supplementation enhanced the motor function transiently in the young adult, but not in the older one. Postnatal VD intake abnormality did not impact the anxiety and depressive behavior but was detrimental to spatial learning and hippocampus-dependent memory. At the molecular level we failed to observe an obvious and constant change with the neural development and activity-related genes examined. However, disrupted developmental expression dynamics were observed for most of the genes, suggesting that the altered neural development dynamics and therefore aberrant adult plasticity might underlie the functional deficits. Our work highlights the essence of VD homeostasis in neural development and adult brain function. Further studies are needed to determine the short- and long-term effects VD intake status may have on brain development, homeostasis, and diseases.
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Affiliation(s)
- Qiujuan Liang
- Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China.,Advanced Institute of Translational Medicine, School of Medicine, Tongji University, Shanghai, China
| | - Chunhui Cai
- Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China.,Advanced Institute of Translational Medicine, School of Medicine, Tongji University, Shanghai, China
| | - Dongxia Duan
- Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Xinyu Hu
- Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Wanhao Hua
- Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China.,Advanced Institute of Translational Medicine, School of Medicine, Tongji University, Shanghai, China
| | - Peicheng Jiang
- Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Liu Zhang
- Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Jun Xu
- East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Zhengliang Gao
- Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China.,Advanced Institute of Translational Medicine, School of Medicine, Tongji University, Shanghai, China
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35
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Pretorius E, Bester J, Kell DB. A Bacterial Component to Alzheimer's-Type Dementia Seen via a Systems Biology Approach that Links Iron Dysregulation and Inflammagen Shedding to Disease. J Alzheimers Dis 2018; 53:1237-56. [PMID: 27340854 PMCID: PMC5325058 DOI: 10.3233/jad-160318] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The progression of Alzheimer's disease (AD) is accompanied by a great many observable changes, both molecular and physiological. These include oxidative stress, neuroinflammation, and (more proximal to cognitive decline) the death of neuronal and other cells. A systems biology approach seeks to organize these observed variables into pathways that discriminate those that are highly involved (i.e., causative) from those that are more usefully recognized as bystander effects. We review the evidence that iron dysregulation is one of the central causative pathway elements here, as this can cause each of the above effects. In addition, we review the evidence that dormant, non-growing bacteria are a crucial feature of AD, that their growth in vivo is normally limited by a lack of free iron, and that it is this iron dysregulation that is an important factor in their resuscitation. Indeed, bacterial cells can be observed by ultrastructural microscopy in the blood of AD patients. A consequence of this is that the growing cells can shed highly inflammatory components such as lipopolysaccharides (LPS). These too are known to be able to induce (apoptotic and pyroptotic) neuronal cell death. There is also evidence that these systems interact with elements of vitamin D metabolism. This integrative systems approach has strong predictive power, indicating (as has indeed been shown) that both natural and pharmaceutical iron chelators might have useful protective roles in arresting cognitive decline, and that a further assessment of the role of microbes in AD development is more than highly warranted.
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Affiliation(s)
- Etheresia Pretorius
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Arcadia, South Africa
| | - Janette Bester
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Arcadia, South Africa
| | - Douglas B Kell
- School of Chemistry, The University of Manchester, Manchester, Lancs, UK.,The Manchester Institute of Biotechnology, The University of Manchester, Manchester, Lancs, UK.,Centre for Synthetic Biology of Fine and Speciality Chemicals, The University of Manchester, Manchester, Lancs, UK
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Grimm MOW, Thiel A, Lauer AA, Winkler J, Lehmann J, Regner L, Nelke C, Janitschke D, Benoist C, Streidenberger O, Stötzel H, Endres K, Herr C, Beisswenger C, Grimm HS, Bals R, Lammert F, Hartmann T. Vitamin D and Its Analogues Decrease Amyloid-β (Aβ) Formation and Increase Aβ-Degradation. Int J Mol Sci 2017; 18:E2764. [PMID: 29257109 PMCID: PMC5751363 DOI: 10.3390/ijms18122764] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 12/01/2017] [Accepted: 12/13/2017] [Indexed: 12/11/2022] Open
Abstract
Alzheimer's disease (AD) is characterized by extracellular plaques in the brain, mainly consisting of amyloid-β (Aβ), as derived from sequential cleavage of the amyloid precursor protein. Epidemiological studies suggest a tight link between hypovitaminosis of the secosteroid vitamin D and AD. Besides decreased vitamin D level in AD patients, an effect of vitamin D on Aβ-homeostasis is discussed. However, the exact underlying mechanisms remain to be elucidated and nothing is known about the potential effect of vitamin D analogues. Here we systematically investigate the effect of vitamin D and therapeutically used analogues (maxacalcitol, calcipotriol, alfacalcidol, paricalcitol, doxercalciferol) on AD-relevant mechanisms. D₂ and D₃ analogues decreased Aβ-production and increased Aβ-degradation in neuroblastoma cells or vitamin D deficient mouse brains. Effects were mediated by affecting the Aβ-producing enzymes BACE1 and γ-secretase. A reduced secretase activity was accompanied by a decreased BACE1 protein level and nicastrin expression, an essential component of the γ-secretase. Vitamin D and analogues decreased β-secretase activity, not only in mouse brains with mild vitamin D hypovitaminosis, but also in non-deficient mouse brains. Our results further strengthen the link between AD and vitamin D, suggesting that supplementation of vitamin D or vitamin D analogues might have beneficial effects in AD prevention.
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Affiliation(s)
- Marcus O W Grimm
- Experimental Neurology, Saarland University, Kirrberger Str. 1, 66421 Homburg/Saar, Germany.
- Neurodegeneration and Neurobiology, Saarland University, Kirrberger Str. 1, 66421 Homburg/Saar, Germany.
- Deutsches Institut für DemenzPrävention (DIDP), Saarland University, Kirrberger Str. 1, 66421 Homburg/Saar, Germany.
| | - Andrea Thiel
- Experimental Neurology, Saarland University, Kirrberger Str. 1, 66421 Homburg/Saar, Germany.
| | - Anna A Lauer
- Experimental Neurology, Saarland University, Kirrberger Str. 1, 66421 Homburg/Saar, Germany.
| | - Jakob Winkler
- Experimental Neurology, Saarland University, Kirrberger Str. 1, 66421 Homburg/Saar, Germany.
| | - Johannes Lehmann
- Experimental Neurology, Saarland University, Kirrberger Str. 1, 66421 Homburg/Saar, Germany.
- Department of Internal Medicine II-Gastroenterology, Saarland University Hospital, Saarland University, Kirrberger Str. 100, 66421 Homburg/Saar, Germany.
| | - Liesa Regner
- Experimental Neurology, Saarland University, Kirrberger Str. 1, 66421 Homburg/Saar, Germany.
| | - Christopher Nelke
- Experimental Neurology, Saarland University, Kirrberger Str. 1, 66421 Homburg/Saar, Germany.
| | - Daniel Janitschke
- Experimental Neurology, Saarland University, Kirrberger Str. 1, 66421 Homburg/Saar, Germany.
| | - Céline Benoist
- Experimental Neurology, Saarland University, Kirrberger Str. 1, 66421 Homburg/Saar, Germany.
| | - Olga Streidenberger
- Experimental Neurology, Saarland University, Kirrberger Str. 1, 66421 Homburg/Saar, Germany.
| | - Hannah Stötzel
- Experimental Neurology, Saarland University, Kirrberger Str. 1, 66421 Homburg/Saar, Germany.
| | - Kristina Endres
- Department of Psychiatry and Psychotherapy, Clinical Research Group, University Medical Centre Johannes Gutenberg, University of Mainz, Untere Zahlbacher Str. 8, 55131 Mainz, Germany.
| | - Christian Herr
- Department of Internal Medicine V-Pulmonology, Allergology, Respiratory Intensive Care Medicine, Saarland University Hospital, Kirrberger Str. 1, 66421 Homburg/Saar, Germany.
| | - Christoph Beisswenger
- Department of Internal Medicine V-Pulmonology, Allergology, Respiratory Intensive Care Medicine, Saarland University Hospital, Kirrberger Str. 1, 66421 Homburg/Saar, Germany.
| | - Heike S Grimm
- Experimental Neurology, Saarland University, Kirrberger Str. 1, 66421 Homburg/Saar, Germany.
| | - Robert Bals
- Department of Internal Medicine V-Pulmonology, Allergology, Respiratory Intensive Care Medicine, Saarland University Hospital, Kirrberger Str. 1, 66421 Homburg/Saar, Germany.
| | - Frank Lammert
- Department of Internal Medicine II-Gastroenterology, Saarland University Hospital, Saarland University, Kirrberger Str. 100, 66421 Homburg/Saar, Germany.
| | - Tobias Hartmann
- Experimental Neurology, Saarland University, Kirrberger Str. 1, 66421 Homburg/Saar, Germany.
- Neurodegeneration and Neurobiology, Saarland University, Kirrberger Str. 1, 66421 Homburg/Saar, Germany.
- Deutsches Institut für DemenzPrävention (DIDP), Saarland University, Kirrberger Str. 1, 66421 Homburg/Saar, Germany.
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Babaei P, Shirkouhi SG, Hosseini R, Soltani Tehrani B. Vitamin D is associated with metabotropic but not neurotrophic effects of exercise in ovariectomized rats. Diabetol Metab Syndr 2017; 9:91. [PMID: 29177013 PMCID: PMC5688735 DOI: 10.1186/s13098-017-0288-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2017] [Accepted: 11/01/2017] [Indexed: 01/13/2023] Open
Abstract
PURPOSE Here, we studied the beneficial effects of aerobic exercise on metabolic syndrome components, cognitive performance, brain derived neurotrophic factor (BDNF) and irisin in ovariectomized rats with different serum vitamin D (Vit D) status. METHODS Eighty female wistar rats were divided into 2 groups of sham operated (sham, n = 8), and ovariectomized (OVX, n = 72). Then OVX were divided into 9 groups of receiving combination of exercise protocol with low dose of Vit D (OVX + EXE + LD), high dose of Vit D (OVX + EXE + HD), Vit D deficiency (OVX + EXE - D), and (OVX + EXE + Veh). Also non exercised groups of OVX receiving high dose of Vit D (OVX + HD), low dose of Vit D (OVX + LD), Vit D deficiency (OVX - D), and Veh (OVX + Veh) were included. After 2 months of related interventions, spatial memory was assessed using Morris water maze (MWM), and then metabolic syndrome components were measured. RESULTS High dose of Vit D supplementation showed significant reduction in weight (p = 0.001), lipid profiles (p = 0.001), visceral fat (p = 0.001) and waist circumference (p = 0.001) regardless of exercising or not, with no change in cognitiive function. Serum BDNF level was significantly higher in Vit D deficient group (p = 0.001), and was decreased in the OVX + HD. In contrary, irisin did not show any significant relationship with serum concentration of Vit D, while it was significantly elevated in the exercised groups compared with non-exercised counterparts. CONCLUSION Vit D insufficiency deteriorates metabolic syndrome components, and elevates serum BDNF as a compensatory metabotropic factor, and further supplementation significantly attenuates these components parallel with reduction in BDNF. In addition, aerobic exercise successfully induces various metabolic benefits, provided optimum serum level of Vit D.
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Affiliation(s)
- Parvin Babaei
- Cellular & Molecular Research Center, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, 2263 Iran
- Department of Physiology, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
- Neuroscience Research Center, Guilan University of Medical Sciences, Rasht, Iran
| | - Samaneh Ghorbani Shirkouhi
- Cellular & Molecular Research Center, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, 2263 Iran
- Department of Physiology, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Rastegar Hosseini
- Department of Physical Education and Sport Sciences, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
| | - Bahram Soltani Tehrani
- Cellular & Molecular Research Center, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, 2263 Iran
- Department of Pharmacology, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
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38
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Berridge MJ. Vitamin D deficiency accelerates ageing and age-related diseases: a novel hypothesis. J Physiol 2017; 595:6825-6836. [PMID: 28949008 DOI: 10.1113/jp274887] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 09/11/2017] [Indexed: 12/24/2022] Open
Abstract
Ageing can occur at different rates, but what controls this variable rate is unknown. Here I have developed a hypothesis that vitamin D may act to control the rate of ageing. The basis of this hypothesis emerged from studyng the various cellular processes that control ageing. These processes such as autophagy, mitochondrial dysfunction, inflammation, oxidative stress, epigenetic changes, DNA disorders and alterations in Ca2+ and reactive oxygen species (ROS) signalling are all known to be regulated by vitamin D. The activity of these processes will be enhanced in individuals that are deficient in vitamin D. Not only will this increase the rate of ageing, but it will also increase the probability of developing age-related diseases such as Alzheimer's disease, Parkinson's disease, multiple sclerosis and cardiovascular disease. In individual with normal vitamin D levels, these ageing-related processes will occur at lower rates resulting in a reduced rate of ageing and enhanced protection against these age-related diseases.
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Zhang D, Li M, Dong Y, Zhang X, Liu X, Chen Z, Zhu Y, Wang H, Liu X, Zhu J, Shen Y, Korner H, Ying S, Fang S, Shen Y. 1α,25-Dihydroxyvitamin D3 up-regulates IL-34 expression in SH-SY5Y neural cells. Innate Immun 2017; 23:584-591. [DOI: 10.1177/1753425917725391] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Vitamin D supplementation is regarded as a novel approach to treat Alzheimer’s disease, but the underlying mechanism remains elusive. The cytokine IL-34 provides strong neuroprotective and survival signals in brain injury and neurodegeneration and could be an immunological mediator for the vitamin D-induced protection. The aim of this study was to investigate whether human IL-34 is up-regulated in neuronal cells by the hormonally active form of vitamin D, 1α,25-dihydroxyvitamin D3 [1α,25(OH)2D3]. We found that IL-34 was detectable in a variety of cell lines and its expression was strongly induced in SH-SY5Y neural cells in a dose- and time-dependent manner by 1α,25(OH)2D3 through the vitamin D receptor (VDR). Furthermore, we identified the core promoter of IL-34 gene and a VDR binding site (CGCCCT) that was required for 1α,25(OH)2D3-induced IL-34 expression. These findings suggest that the induction of IL-34 expression by 1α,25(OH)2D3 may constitute a mechanism that explains the protective function of vitamin D in Alzheimer’s disease.
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Affiliation(s)
- Dong Zhang
- Department of Immunology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui Province, P.R. China
- Biopharmaceutical Research Institute, Anhui Medical University, Hefei, Anhui Province, P.R. China
| | - Miaomiao Li
- Department of Immunology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui Province, P.R. China
| | - Yang Dong
- Department of Immunology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui Province, P.R. China
| | - Xinhui Zhang
- Department of Immunology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui Province, P.R. China
| | - Xingyun Liu
- Department of Immunology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui Province, P.R. China
| | - Zhangming Chen
- Department of Immunology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui Province, P.R. China
| | - Yongji Zhu
- Department of Immunology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui Province, P.R. China
| | - Huiming Wang
- Department of Immunology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui Province, P.R. China
| | - Xuwen Liu
- Department of Immunology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui Province, P.R. China
| | - Jialiang Zhu
- Department of Immunology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui Province, P.R. China
| | - Yujun Shen
- Biopharmaceutical Research Institute, Anhui Medical University, Hefei, Anhui Province, P.R. China
| | - Heinrich Korner
- Menzies Institute for Medical Research Tasmania, Hobart, Tasmania, Australia
| | - Songcheng Ying
- Department of Immunology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui Province, P.R. China
- School of Pharmacy, Anhui Medical University, Hefei, Anhui Province, P.R. China
| | - Shengyun Fang
- Biopharmaceutical Research Institute, Anhui Medical University, Hefei, Anhui Province, P.R. China
| | - Yuxian Shen
- Biopharmaceutical Research Institute, Anhui Medical University, Hefei, Anhui Province, P.R. China
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Banerjee A, Khemka VK, Roy D, Dhar A, Sinha Roy TK, Biswas A, Mukhopadhyay B, Chakrabarti S. Role of Pro-Inflammatory Cytokines and Vitamin D in Probable Alzheimer's Disease with Depression. Aging Dis 2017; 8:267-276. [PMID: 28580183 PMCID: PMC5440107 DOI: 10.14336/ad.2016.1017] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Accepted: 10/17/2016] [Indexed: 12/26/2022] Open
Abstract
Symptoms of depression are present in a significant proportion of Alzheimer's disease (AD) patients. While epidemiological studies have shown a strong association between depression and AD, it has not been established whether depression is a risk factor or merely a co-morbidity of AD. It is also uncertain if depression affects the pathogenesis of AD. In this paper, we address these questions by measuring the serum levels of two common metabolic risk factors of AD and depression, inflammatory cytokines (IL 6 and TNF alpha) and serum 25-hydroxyvitamin D, in a case-control study. We measured the serum levels of IL 6, TNF α and 25-hydroxyvitamin D in age-matched healthy controls (n= 60) and in AD patients without depression (n=26) or AD patients with depression (n=34), and statistically analyzed the changes in these parameters among different groups under this study. Our results show that in AD there is a significant increase in IL 6 and TNF α and a marked decrease in 25-hydroxyvitamin D in the peripheral circulation compared to age-matched healthy controls. Furthermore, AD patients with depression have even significantly higher levels of IL 6 or TNF α and a lower level of 25-hydroxyvitamin D in circulation than in AD patients without depression. We also found a strong statistical correlation between the disease severity and the serum levels of IL 6, TNF α and 25-hydroxyvitamin D in AD patients with depression. These results suggest that altered circulating levels of common metabolic risk factors lead to the co-existence of depression with AD in many patients, and when they co-exist, the depression presumably affects the severity of AD presentations through more aggravated changes in these risk factors.
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Affiliation(s)
- Anindita Banerjee
- 1Department of Biochemistry, ICARE Institute of Medical Sciences and Research, Haldia, India.,2Department of Biochemistry, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - Vineet Kumar Khemka
- 1Department of Biochemistry, ICARE Institute of Medical Sciences and Research, Haldia, India.,2Department of Biochemistry, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - Debashree Roy
- 2Department of Biochemistry, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - Aparajita Dhar
- 2Department of Biochemistry, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - Tapan Kumar Sinha Roy
- 2Department of Biochemistry, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - Atanu Biswas
- 3Department of Neurology, Bangur Institute of Neurosciences, Kolkata, India
| | - Barun Mukhopadhyay
- 4Biological Anthropology Unit, Indian Statistical Institute, Kolkata, India
| | - Sasanka Chakrabarti
- 1Department of Biochemistry, ICARE Institute of Medical Sciences and Research, Haldia, India
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Nutrition and AGE-ing: Focusing on Alzheimer's Disease. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:7039816. [PMID: 28168012 PMCID: PMC5266861 DOI: 10.1155/2017/7039816] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 09/28/2016] [Accepted: 09/29/2016] [Indexed: 01/08/2023]
Abstract
Recently, the role of food and nutrition in preventing or delaying chronic disability in the elderly population has received great attention. Thanks to their ability to influence biochemical and biological processes, bioactive nutrients are considered modifiable factors capable of preserving a healthy brain status. A diet rich in vitamins and polyphenols and poor in saturated fatty acids has been recommended. In the prospective of a healthy diet, cooking methods should be also considered. In fact, cooking procedures can modify the original dietary content, contributing not only to the loss of healthy nutrients, but also to the formation of toxins, including advanced glycation end products (AGEs). These harmful compounds are adsorbed at intestinal levels and can contribute to the ageing process. The accumulation of AGEs in ageing (“AGE-ing”) is further involved in the exacerbation of neurodegenerative and many other chronic diseases. In this review, we discuss food's dual role as both source of bioactive nutrients and reservoir for potential toxic compounds—paying particular attention to the importance of proper nutrition in preventing/delaying Alzheimer's disease. In addition, we focus on the importance of a good education in processing food in order to benefit from the nutritional properties of an optimal diet.
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The Impact of Vitamin E and Other Fat-Soluble Vitamins on Alzheimer´s Disease. Int J Mol Sci 2016; 17:ijms17111785. [PMID: 27792188 PMCID: PMC5133786 DOI: 10.3390/ijms17111785] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 10/14/2016] [Accepted: 10/20/2016] [Indexed: 12/25/2022] Open
Abstract
Alzheimer’s disease (AD) is the most common cause of dementia in the elderly population, currently affecting 46 million people worldwide. Histopathologically, the disease is characterized by the occurrence of extracellular amyloid plaques composed of aggregated amyloid-β (Aβ) peptides and intracellular neurofibrillary tangles containing the microtubule-associated protein tau. Aβ peptides are derived from the sequential processing of the amyloid precursor protein (APP) by enzymes called secretases, which are strongly influenced by the lipid environment. Several vitamins have been reported to be reduced in the plasma/serum of AD-affected individuals indicating they have an impact on AD pathogenesis. In this review we focus on vitamin E and the other lipophilic vitamins A, D, and K, and summarize the current knowledge about their status in AD patients, their impact on cognitive functions and AD risk, as well as their influence on the molecular mechanisms of AD. The vitamins might affect the generation and clearance of Aβ both by direct effects and indirectly by altering the cellular lipid homeostasis. Additionally, vitamins A, D, E, and K are reported to influence further mechanisms discussed to be involved in AD pathogenesis, e.g., Aβ-aggregation, Aβ-induced neurotoxicity, oxidative stress, and inflammatory processes, as summarized in this article.
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Athanasopoulos D, Karagiannis G, Tsolaki M. Recent Findings in Alzheimer Disease and Nutrition Focusing on Epigenetics. Adv Nutr 2016; 7:917-27. [PMID: 27633107 PMCID: PMC5015036 DOI: 10.3945/an.116.012229] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Alzheimer disease (AD) is a chronic neurodegenerative disease with no effective cure so far. The current review focuses on the epigenetic mechanisms of AD and how nutrition can influence the course of this disease through regulation of gene expression, according to the latest scientific findings. The search strategy was the use of scientific databases such as PubMed and Scopus in order to find relative research or review articles published in the years 2012-2015. By showing the latest data of various nutritional compounds, this study aims to stimulate the scientific community to recognize the value of nutrition in this subject. Epigenetics is becoming a very attractive subject for researchers because it can shed light on unknown aspects of complex diseases like AD. DNA methylation, histone modifications, and microRNAs are the principal epigenetic mechanisms involved in AD pathophysiology. Nutrition is an environmental factor that is related to AD through epigenetic pathways. Vitamin B-12, for instance, can alter the one-carbon metabolism and thus interfere in the DNA methylation process. The research results might seem ambiguous about the clinical role of nutrition, but there is strengthening evidence that proper nutrition can not only change epigenetic biomarker levels but also prevent the development of late-onset AD and attenuate cognition deficit. Nutrition might grow to become a preventive and even therapeutic alternative against AD, especially if combined with other antidementia interventions, brain exercise, physical training, etc. Epigenetic biomarkers can be a very helpful tool to help researchers find the exact nutrients needed to create specific remedies, and perhaps the same biomarkers can be used even in patient screening in the future.
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Affiliation(s)
| | | | - Magda Tsolaki
- Neurology, Aristotle University of Thessaloniki, Thessaloniki, Greece; and Greek Association of Alzheimer's Disease and Related Disorders, Thessaloniki, Greece
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Nehls M. Unified theory of Alzheimer's disease (UTAD): implications for prevention and curative therapy. J Mol Psychiatry 2016; 4:3. [PMID: 27429752 PMCID: PMC4947325 DOI: 10.1186/s40303-016-0018-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Accepted: 07/03/2016] [Indexed: 12/14/2022] Open
Abstract
The aim of this review is to propose a Unified Theory of Alzheimer's disease (UTAD) that integrates all key behavioural, genetic and environmental risk factors in a causal chain of etiological and pathogenetic events. It is based on three concepts that emanate from human's evolutionary history: (1) The grandmother-hypothesis (GMH), which explains human longevity due to an evolutionary advantage in reproduction by trans-generational transfer of acquired knowledge. Consequently it is argued that mental health at old-age must be the default pathway of humans' genetic program and not development of AD. (2) Therefore, mechanism like neuronal rejuvenation (NRJ) and adult hippocampal neurogenesis (AHN) that still function efficiently even at old age provide the required lifelong ability to memorize personal experiences important for survival. Cumulative evidence from a multitude of experimental and epidemiological studies indicate that behavioural and environmental risk factors, which impair productive AHN, result in reduced episodic memory performance and in reduced psychological resilience. This leads to avoidance of novelty, dysregulation of the hypothalamic-pituitary-adrenal (HPA)-axis and cortisol hypersecretion, which drives key pathogenic mechanisms of AD like the accumulation and oligomerization of synaptotoxic amyloid beta, chronic neuroinflammation and neuronal insulin resistance. (3) By applying to AHN the law of the minimum (LOM), which defines the basic requirements of biological growth processes, the UTAD explains why and how different lifestyle deficiencies initiate the AD process by impairing AHN and causing dysregulation of the HPA-axis, and how environmental and genetic risk factors such as toxins or ApoE4, respectively, turn into disease accelerators under these unnatural conditions. Consequently, the UTAD provides a rational strategy for the prevention of mental decline and a system-biological approach for the causal treatment of AD, which might even be curative if the systemic intervention is initiated early enough in the disease process. Hence an individualized system-biological treatment of patients with early AD is proposed as a test for the validity of UTAD and outlined in this review.
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Affiliation(s)
- Michael Nehls
- Independent Researcher, Allmendweg 1, 79279 Vörstetten, Germany
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45
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Hypovitaminosis D3, Leukopenia, and Human Serotonin Transporter Polymorphism in Anorexia Nervosa and Bulimia Nervosa. Mediators Inflamm 2016; 2016:8046479. [PMID: 26903713 PMCID: PMC4745338 DOI: 10.1155/2016/8046479] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 12/24/2015] [Indexed: 01/08/2023] Open
Abstract
Vitamin D3 has been described to have different extraskeletal roles by acting as parahormone in obesity, diabetes, cancer, cognitive impairment, and dementia and to have important regulatory functions in innate immunity. There are no studies showing extraskeletal changes associated with hypovitaminosis D3 in eating disorders. Methods. We have analyzed the blood of 18 patients affected by anorexia nervosa and bulimia nervosa collected over a 15-month period. We performed a panel of chemical and clinical analyses: the assay of vitamin D3, the immunoblotting of vitamin D receptor and peroxisome proliferator-activated receptor gamma, and the genotyping of 5-hydroxytryptamine transporter linked polymorphic region. Results. We choose 18 patients with a normal blood test profile such as thyroid hormones, hepatic and renal parameters, triglycerides, proteins, vitamin B12, and folic acid. Among these emerged the case of a woman with long-term anorexia nervosa and the case of a woman with long-term bulimia nervosa both complicated by anxiety and depression, severe hypovitaminosis D3, decrease of vitamin D receptor, leukopenia, and 5-hydroxytryptamine transporter linked polymorphic region short allele. Conclusion. The results induce hypothesising that the severe hypovitaminosis D3 might be responsible for the lack of the inflammatory response and the depressive symptoms in patients with long-term eating disorders.
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