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Goktas Z, Zu Y, Abbasi M, Galyean S, Wu D, Fan Z, Wang S. Recent Advances in Nanoencapsulation of Phytochemicals to Combat Obesity and Its Comorbidities. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:8119-8131. [PMID: 32633507 PMCID: PMC8507418 DOI: 10.1021/acs.jafc.0c00131] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
An increasing epidemic of obesity has become a serious public health concern primarily because it contributes to pathogenesis of many chronic diseases including type 2 diabetes, cardiovascular disease, hepatobiliary disease, obstructive sleep apnea, kidney disease, some types of cancer, among others. Consumption of a variety of phytochemicals has emerged as a promising potential for combating obesity and its comorbidities. However, the generally low aqueous solubility, stability, bioavailability, and target specificity of phytochemicals, along with their side-effects and toxicity seen when used at high doses, have restricted their clinical applications. As a solution, phytochemicals can be encapsulated into nanoparticles to increase their stability and solubility, enhance their bioavailability, protect them from premature degradation in the body, prolong their circulation time, and thus enhance their antiobesity activity. In this perspective, we summarize the problems and limitations of the prominent phytochemicals (epigallocatechin gallate, trans-resveratrol, curcumin, and quercetin), the major biocompatible and biodegradable nanoparticles, and the efficacy of nanoencapsulated forms of these phytochemicals in combating obesity and its comorbidities.
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Affiliation(s)
- Zeynep Goktas
- Faculty of Health Sciences, Department of Nutrition and Dietetics, Hacettepe University, 06100 Ankara, Turkey
| | - Yujiao Zu
- Department of Nutritional Sciences, Texas Tech University, Lubbock, Texas 79409, United States
| | - Mehrnaz Abbasi
- Department of Nutritional Sciences, Texas Tech University, Lubbock, Texas 79409, United States
| | - Shannon Galyean
- Department of Nutritional Sciences, Texas Tech University, Lubbock, Texas 79409, United States
| | - Dayong Wu
- Nutrition Immunology Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, Massachusetts 02111, United States
| | - Zhaoyang Fan
- Department of Electrical & Computer Engineering and Nano Tech Center, Texas Tech University, Lubbock, Texas 79409, United States
| | - Shu Wang
- Department of Nutritional Sciences, Texas Tech University, Lubbock, Texas 79409, United States
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Zhao J, Liu X, Xia W, Zhang Y, Wang C. Targeting Amyloidogenic Processing of APP in Alzheimer's Disease. Front Mol Neurosci 2020; 13:137. [PMID: 32848600 PMCID: PMC7418514 DOI: 10.3389/fnmol.2020.00137] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 07/08/2020] [Indexed: 12/11/2022] Open
Abstract
Alzheimer's disease (AD) is the most common type of senile dementia, characterized by neurofibrillary tangle and amyloid plaque in brain pathology. Major efforts in AD drug were devoted to the interference with the production and accumulation of amyloid-β peptide (Aβ), which plays a causal role in the pathogenesis of AD. Aβ is generated from amyloid precursor protein (APP), by consecutive cleavage by β-secretase and γ-secretase. Therefore, β-secretase and γ-secretase inhibition have been the focus for AD drug discovery efforts for amyloid reduction. Here, we review β-secretase inhibitors and γ-secretase inhibitors/modulators, and their efficacies in clinical trials. In addition, we discussed the novel concept of specifically targeting the γ-secretase substrate APP. Targeting amyloidogenic processing of APP is still a fundamentally sound strategy to develop disease-modifying AD therapies and recent advance in γ-secretase/APP complex structure provides new opportunities in designing selective inhibitors/modulators for AD.
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Affiliation(s)
- Jing Zhao
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, United States
| | - Xinyue Liu
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, United States
| | - Weiming Xia
- Geriatric Research Education Clinical Center, Edith Nourse Rogers Memorial Veterans Hospital, Bedford, MA, United States
- Department of Pharmacology and Experimental Therapeutics, School of Medicine, Boston University, Boston, MA, United States
| | - Yingkai Zhang
- Department of Chemistry, New York University, New York, NY, United States
| | - Chunyu Wang
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, United States
- Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, NY, United States
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, NY, United States
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A Curcumin Analog Exhibits Multiple Biologic Effects on the Pathogenesis of Alzheimer's Disease and Improves Behavior, Inflammation, and β-Amyloid Accumulation in a Mouse Model. Int J Mol Sci 2020; 21:ijms21155459. [PMID: 32751716 PMCID: PMC7432838 DOI: 10.3390/ijms21155459] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/06/2020] [Accepted: 07/28/2020] [Indexed: 12/19/2022] Open
Abstract
Drugs for the treatment of Alzheimer’s disease (AD) are in urgent demand due to the unmet need and the social burden associated with the disease. Curcumin has been historically considered as a beneficial product for anti-aging and AD. However, many efforts to develop curcumin for clinical use are hindered mainly due to its poor bioavailability. Recent development in drug delivery and structural design has resolved these issues. In this study, we identified a small molecule, TML-6, as a potential drug candidate for AD through screening a panel of curcumin derivatives using six biomarker platforms related to aging biology and AD pathogenesis. The structural modification of TML-6 is designed to improve the stability and metabolism of curcumin. Cell biological studies demonstrated that TML-6 could inhibit the synthesis of the β-amyloid precursor protein and β-amyloid (Aβ), upregulate Apo E, suppress NF-κB and mTOR, and increase the activity of the anti-oxidative Nrf2 gene. In the 3x-Tg AD animal model, TML-6 treatment resulted in significant improvement in learning, suppression of the microglial activation marker Iba-1, and reduction in Aβ in the brain. Although TML-6 exhibited a greater improvement in bioavailability as compared to curcumin, formulation optimization and toxicological studies are under development to assure its druggability. Taken together, TML-6 meets the current strategy to develop therapeutics for AD, targeting the combination of the Aβ cascade and aging-related biology processes.
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Namgyal D, Ali S, Mehta R, Sarwat M. The neuroprotective effect of curcumin against Cd-induced neurotoxicity and hippocampal neurogenesis promotion through CREB-BDNF signaling pathway. Toxicology 2020; 442:152542. [PMID: 32735850 DOI: 10.1016/j.tox.2020.152542] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 07/14/2020] [Accepted: 07/25/2020] [Indexed: 02/07/2023]
Abstract
Heavy metal neurotoxicity is one of the major challenges in today's era due to the large scale and widespread mechanisation of the production. However, the causative factors responsible for neurotoxicity are neither known nor do we have the availability of therapeutic approaches to deal with it. One of the major causative agents of neurotoxicity is a non-essential transition heavy metal, Cadmium (Cd), that reaches the central nervous system (CNS) through the nasal mucosa and olfactory pathway causing adverse structural and functional effects. In this study, we explored the neuroprotective efficacy of plant derived Curcumin which is reported to have pleiotropic biological activity including anti-oxidant, anti-inflammatory, anti-apoptotic, anti-carcinogenic and anti-angiogenic effects. Four different concentrations of curcumin (20, 40, 80 and 160 mg/kg of the body weight) were used to assess the behavioural, biochemical, hippocampal proteins (BDNF, CREB, DCX and Synapsin II) and histological changes in Swiss Albino mice that were pre-treated with Cd (2.5 mg/kg). The findings showed that Cd exposure led to the behavioural impairment through oxidative stress, reduction of hippocampal neurogenesis associated proteins, and degeneration of CA3 and cortical neurons. However, treatment of different curcumin concentrations had effectively restored the behavioural changes in Cd-exposed mice through regulation of oxidative stress and up-regulation of hippocampal proteins in a dose-dependent manner. Significantly, a dose of 160 mg/kg body weight was found to be glaringly effective. From this study, we infer that curcumin reverses the adverse effects of neurotoxicity induced by Cd and promotes neurogenesis.
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Affiliation(s)
- Dhondup Namgyal
- Amity Institute of Neuropsychology and Neuroscience, Amity University, Noida, UP, 201303, India; Amity Institute of Pharmacy, Amity University, Noida, UP, 201303, India
| | - Sher Ali
- Center for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi, 110025, India
| | - Rachna Mehta
- Amity Institute of Neuropsychology and Neuroscience, Amity University, Noida, UP, 201303, India
| | - Maryam Sarwat
- Amity Institute of Pharmacy, Amity University, Noida, UP, 201303, India.
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Sidiqi A, Wahl D, Lee S, Ma D, To E, Cui J, To E, Beg MF, Sarunic M, Matsubara JA. In vivo Retinal Fluorescence Imaging With Curcumin in an Alzheimer Mouse Model. Front Neurosci 2020; 14:713. [PMID: 32719582 PMCID: PMC7350785 DOI: 10.3389/fnins.2020.00713] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 06/12/2020] [Indexed: 12/04/2022] Open
Abstract
Alzheimer’s disease (AD) is characterized by amyloid beta (Aβ) plaques in the brain detectable by highly invasive in vivo brain imaging or in post-mortem tissues. A non-invasive and inexpensive screening method is needed for early diagnosis of asymptomatic AD patients. The shared developmental origin and similarities with the brain make the retina a suitable surrogate tissue to assess Aβ load in AD. Using curcumin, a FluoroProbe that binds to Aβ, we labeled and measured the retinal fluorescence in vivo and compared with the immunohistochemical measurements of the brain and retinal Aβ load in the APP/PS1 mouse model. In vivo retinal images were acquired every 2 months using custom fluorescence scanning laser ophthalmoscopy (fSLO) after tail vein injections of curcumin in individual mice followed longitudinally from ages 5 to 19 months. At the same time points, 1–2 mice from the same cohort were sacrificed and immunohistochemistry was performed on their brain and retinal tissues. Results demonstrated cortical and retinal Aβ immunoreactivity were significantly greater in Tg than WT groups. Age-related increase in retinal Aβ immunoreactivity was greater in Tg than WT groups. Retinal Aβ immunoreactivity was present in the inner retinal layers and consisted of small speck-like extracellular deposits and intracellular labeling in the cytoplasm of a subset of retinal ganglion cells. In vivo retinal fluorescence with curcumin injection was significantly greater in older mice (11–19 months) than younger mice (5–9 months) in both Tg and WT groups. In vivo retinal fluorescence with curcumin injection was significantly greater in Tg than WT in older mice (ages 11–19 months). Finally, and most importantly, the correlation between in vivo retinal fluorescence with curcumin injection and Aβ immunoreactivity in the cortex was stronger in Tg compared to WT groups. Our data reveal that retina and brain of APP/PS1 Tg mice increasingly express Aβ with age. In vivo retinal fluorescence with curcumin correlated strongly with cortical Aβ immunohistochemistry in Tg mice. These findings suggest that using in vivo fSLO imaging of AD-susceptible retina may be a useful, non-invasive method of detecting Aβ in the retina as a surrogate indicator of Aβ load in the brain.
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Affiliation(s)
- Ahmad Sidiqi
- Department of Ophthalmology & Visual Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Daniel Wahl
- School of Engineering Science, Simon Fraser University, Burnaby, BC, Canada
| | - Sieun Lee
- Department of Ophthalmology & Visual Sciences, University of British Columbia, Vancouver, BC, Canada.,School of Engineering Science, Simon Fraser University, Burnaby, BC, Canada
| | - Da Ma
- School of Engineering Science, Simon Fraser University, Burnaby, BC, Canada
| | - Elliott To
- Department of Ophthalmology & Visual Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Jing Cui
- Department of Ophthalmology & Visual Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Eleanor To
- Department of Ophthalmology & Visual Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Mirza Faisal Beg
- School of Engineering Science, Simon Fraser University, Burnaby, BC, Canada
| | - Marinko Sarunic
- School of Engineering Science, Simon Fraser University, Burnaby, BC, Canada
| | - Joanne A Matsubara
- Department of Ophthalmology & Visual Sciences, University of British Columbia, Vancouver, BC, Canada
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Battista S, Maggi MA, Bellio P, Galantini L, D’Archivio AA, Celenza G, Colaiezzi R, Giansanti L. Curcuminoids-loaded liposomes: influence of lipid composition on their physicochemical properties and efficacy as delivery systems. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124759] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Cox KHM, White DJ, Pipingas A, Poorun K, Scholey A. Further Evidence of Benefits to Mood and Working Memory from Lipidated Curcumin in Healthy Older People: A 12-Week, Double-Blind, Placebo-Controlled, Partial Replication Study. Nutrients 2020; 12:nu12061678. [PMID: 32512782 PMCID: PMC7352411 DOI: 10.3390/nu12061678] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 05/29/2020] [Accepted: 05/29/2020] [Indexed: 01/11/2023] Open
Abstract
Curcumin (a flavonoid isolated from turmeric) affects several processes involved in neurocognitive aging. We have previously reported that short term (4-weeks) administration of a highly bioavailable curcumin preparation (Longvida©) improved working memory and reduced fatigue and stress reactivity in a healthy older cohort. The present trial (ACTRN12616000484448) was a partial replication study, evaluating similar effects at 4 and 12-weeks Longvida© supplementation. A double-blind, placebo-controlled, parallel-groups trial was conducted. Eighty participants aged 50-80 years (mean = 68.1, SD = 6.34) were randomised to receive Longvida© (400 mg daily containing 80 mg curcumin) or a matching placebo. Assessment took place at baseline then following 4 and 12 weeks treatment. Outcome measures included cognitive performance, mood and biomarkers. Compared with placebo, curcumin was associated with several significant effects. These included better working memory performance at 12-weeks (Serial Threes, Serial Sevens and performance on a virtual Morris Water Maze), and lower fatigue scores on the Profile of Mood States (POMS) at both 4 and 12-weeks, and of tension, anger, confusion and total mood disturbance at 4-weeks only. The curcumin group had significantly elevated blood glucose. These results confirm that Longvida© improves aspects of mood and working memory in a healthy older cohort. The pattern of results is consistent with improvements in hippocampal function and may hold promise for alleviating cognitive decline in some populations.
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Mei X, Zhu L, Zhou Q, Li X, Chen Z. Interplay of curcumin and its liver metabolism on the level of Aβ in the brain of APP swe/PS1 dE9 mice before AD onset. Pharmacol Rep 2020; 72:1604-1613. [PMID: 32468514 DOI: 10.1007/s43440-020-00116-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 05/20/2020] [Accepted: 05/25/2020] [Indexed: 12/27/2022]
Abstract
BACKGROUND An increasing number of studies have shown that Alzheimer's disease (AD) is a systemic disease characterized by brain dysfunction. In this study, we aimed to investigate the effects of curcumin on the liver, an important metabolic organ, and on the brain in APPswe/PS1dE9 (APP/PS1) mice, and the interaction between these effects. METHODS Curcumin was administered to 5-month-old APP/PS1 transgenic mice for 7 consecutive days using the intragastric (ig) and intracerebroventricular (icv) administration routes, respectively. The object recognition test (ORT) and open field test (OFT) were conducted to evaluate long-term recognition memory and anxiety after curcumin administration. Levels of β-amyloid (Aβ), Aβ42, and interleukin-1β (IL-1β) in the brain and liver were measured. RESULTS In the ig group, curcumin ameliorated anxiety-like behavior and suppressed the level of Aβ42 in the liver and the total Aβ in the brain. In the icv group, curcumin treatment affected the distribution of Aβ42 and IL-1β in the brain compared to the liver. There was a significant treatment-region interaction in Aβ42 level for the icv group (F(1, 24) = 17.7, p < 0.001), but no interaction effect for the ig group. CONCLUSION Our findings show that curcumin administration before Aβ deposition shows promise for preventing AD, and further that curcumin may play an important role in the clearance of Aβ42 from the brain to the peripheral circulation.
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Affiliation(s)
- Xi Mei
- Kangning Hospital of Ningbo, Ningbo, Zhejiang, China.
| | - Lina Zhu
- Weifang Medical University, Weifang, Shandong, China
| | - Qi Zhou
- Kangning Hospital of Ningbo, Ningbo, Zhejiang, China
| | - Xingxing Li
- Kangning Hospital of Ningbo, Ningbo, Zhejiang, China
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Vaiserman A, Koliada A, Lushchak O. Neuroinflammation in pathogenesis of Alzheimer's disease: Phytochemicals as potential therapeutics. Mech Ageing Dev 2020; 189:111259. [PMID: 32450086 DOI: 10.1016/j.mad.2020.111259] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 05/02/2020] [Accepted: 05/02/2020] [Indexed: 02/07/2023]
Abstract
Accumulation of neurotoxic forms of amyloid-β proteins in senile plaques and hyperphosphorylated tau proteins in neurofibrillary tangles is a well-known pathophysiological hallmark of Alzheimer's disease (AD). However, clinical trials with drugs targeting amyloid-β and tau have failed to demonstrate efficacy in treating AD. All currently FDA-approved anti-AD drugs have symptomatic effects only and are not able to cure this disease. This makes necessary to search for alternative therapeutic targets. Accumulating evidence suggests that systemic inflammation and related vascular dysfunction play important etiological roles in AD and precede its clinical manifestation. Therefore, novel therapeutic modalities targeted at these pathophysiological components of AD are intensively developed now. Phytochemicals such as resveratrol, curcumin, quercetin, genistein and catechins are promising anti-AD therapeutics due to their ability to affect major pathogenetic mechanisms of AD, including oxidative stress, neuroinflammation and mitochondrial dysfunction. The implementation of innovative approaches for phytochemical delivery, including the nanotechnology-based ones which enable to significantly enhance their oral bioavailability, would likely provide an opportunity to address many challenges of conventional anti-AD therapies. In this review, roles of inflammation and vascular dysregulation in AD are described and phytobioactive compound-based treatment strategies for AD are discussed.
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Affiliation(s)
- Alexander Vaiserman
- Laboratory of Epigenetics, D.F. Chebotarev Institute of Gerontology, NAMS, 67 Vyshgorodska str., Kyiv, 04114, Ukraine.
| | - Alexander Koliada
- Laboratory of Epigenetics, D.F. Chebotarev Institute of Gerontology, NAMS, 67 Vyshgorodska str., Kyiv, 04114, Ukraine
| | - Oleh Lushchak
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, 57 Shevchenka str., Ivano-Frankivsk, 76018, Ukraine
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Abstract
Objectives: The beneficial effects of many substances have been discovered because of regular dietary consumption. This is also the case with curcumin, whose effects have been known for more than 4,000 years in Eastern countries such as China and India. A curcumin-rich diet has been known to counteract many human diseases, including cancer and diabetes, and has been shown to reduce inflammation. The effect of a curcumin treatment for neurological diseases, such as spinal muscular atrophy; Alzheimer's disease; Parkinson's disease; amyotrophic lateral sclerosis; multiple sclerosis; and others, has only recently been brought to the attention of researchers and the wider population.Methods: In this paper, we summarise the studies on this natural product, from its isolation two centuries ago to its characterisation a century later.Results: We describe its role in the treatment of neurological diseases, including its cellular and common molecular mechanisms, and we report on the clinical trials of curcumin with healthy people and patients.Discussion: Commenting on the different approaches adopted by the efforts made to increase its bioavailability.
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Affiliation(s)
- Raffaella Adami
- Department of Health Sciences, University of Milan, Milan, Italy
| | - Daniele Bottai
- Department of Health Sciences, University of Milan, Milan, Italy
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Qin Y, Xu L, Guan YY, Liu H. Multifunctionalized Protein-Based Drug Delivery System for Inhibition of Tumor Growth and Progression. ACS APPLIED BIO MATERIALS 2020; 3:3196-3202. [DOI: 10.1021/acsabm.0c00190] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yin Qin
- Key Laboratory of Biotechnology of Chinese Traditional Medicine of Hubei Province, Hubei Collaborative Innovation Center for Green Transformation of Bio-resources, National & Local Joint Engineering Research Center of High-throughput Drug Screening Technology, College of Life Sciences, Hubei University, Wuhan 430062, People’s Republic of China
| | - Lei Xu
- Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Ying-Ying Guan
- Key Laboratory of Biotechnology of Chinese Traditional Medicine of Hubei Province, Hubei Collaborative Innovation Center for Green Transformation of Bio-resources, National & Local Joint Engineering Research Center of High-throughput Drug Screening Technology, College of Life Sciences, Hubei University, Wuhan 430062, People’s Republic of China
| | - Hong Liu
- Key Laboratory of Biotechnology of Chinese Traditional Medicine of Hubei Province, Hubei Collaborative Innovation Center for Green Transformation of Bio-resources, National & Local Joint Engineering Research Center of High-throughput Drug Screening Technology, College of Life Sciences, Hubei University, Wuhan 430062, People’s Republic of China
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Wijiani N, Isadiartuti D, Rijal MAS, Yusuf H. Characterization and Dissolution Study of Micellar Curcumin-Spray Dried Powder for Oral Delivery. Int J Nanomedicine 2020; 15:1787-1796. [PMID: 32214811 PMCID: PMC7083647 DOI: 10.2147/ijn.s245050] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 02/19/2020] [Indexed: 11/24/2022] Open
Abstract
Introduction Curcumin faces a major challenge in clinical use due to its poor aqueous solubility, which affects its bioavailability over oral use. The present study was carried out to overcome this problem. Methods An amorphous micellar curcumin-spray dried powder (MC-SDP) with self-assembled casein was prepared by the addition of sucrose as a protectant. The dry powder of curcumin-loaded micelles was obtained by a spray-drying technique in the presence of sucrose as a protectant. The MC-SDP in the form of dry powder was further developed into tablets to investigate the dissolution profile. The physical properties of preformed powder were characterized by differential thermal analysis (DTA), X-ray diffraction (XRD), and scanning electron microscopy (SEM). Quantitative analysis in the form of solutions was analyzed by high-performance liquid chromatography (HPLC). Results The physical properties demonstrated that MC-SDP varies from dented to smoother surfaces as a function of sucrose. Furthermore, melting transitions of curcumin in the form of MC-SDP were broadened in all sample mixtures, as observed in the DTA thermogram. The XRD spectra showed that the sharp and very intense peaks of single curcumin crystalline structure no longer existed in all MC-SDP forms, indicating that the mixtures were amorphous. Moreover, a further dissolution study of MC-SDP showed a significant increase of drug dissolved with the presence of sucrose, where >80% of curcumin from MC-SDP was dissolved within 30 min. Conclusion The study demonstrated the manufacture of micellar spray-dried powder that would contribute to the development of oral delivery of curcumin.
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Affiliation(s)
- Nina Wijiani
- Department of Pharmaceutics, Universitas Airlangga, Surabaya, Indonesia
| | - Dewi Isadiartuti
- Department of Pharmaceutics, Universitas Airlangga, Surabaya, Indonesia
| | | | - Helmy Yusuf
- Department of Pharmaceutics, Universitas Airlangga, Surabaya, Indonesia
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Howes MR, Perry NS, Vásquez‐Londoño C, Perry EK. Role of phytochemicals as nutraceuticals for cognitive functions affected in ageing. Br J Pharmacol 2020; 177:1294-1315. [PMID: 31650528 PMCID: PMC7056459 DOI: 10.1111/bph.14898] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 09/27/2019] [Accepted: 10/03/2019] [Indexed: 02/06/2023] Open
Abstract
Cognitive decline can occur with normal ageing and in age-related brain disorders, such as mild cognitive impairment and dementia, including Alzheimer's disease, with limited pharmacological therapies available. Other approaches to reduce cognitive decline are urgently needed, and so, the role of dietary interventions or nutraceuticals has received much attention in this respect. In this review, we examine the evidence for dietary plants and their chemical constituents as nutraceuticals, relevant to both cognitive decline in normal ageing and in dementia. Pharmacological (in vitro and in vivo), clinical and epidemiological evidence is assessed for both frequently consumed plants and their dietary forms, including tea, coffee, cocoa (chocolate), red wine, grapes, citrus and other fruits; in addition to plants used less frequently in certain diets and those that cross the blurred boundaries between foods, nutraceuticals and medicinal plants. For the latter, turmeric, saffron, sage, rosemary and lemon balm are examples of those discussed. LINKED ARTICLES: This article is part of a themed section on The Pharmacology of Nutraceuticals. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v177.6/issuetoc.
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Affiliation(s)
- Melanie‐Jayne R. Howes
- Natural Capital and Plant Health DepartmentRoyal Botanic Gardens, KewSurreyUK
- Institute of Pharmaceutical ScienceKing's College LondonLondonUK
| | | | | | - Elaine K. Perry
- Dilston Physic GardenCorbridgeUK
- Institute for Ageing and HealthNewcastle UniversityNewcastle upon TyneUK
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Han Z, Zhang J, Zhang K, Zhao Y. Curcumin inhibits cell viability, migration, and invasion of thymic carcinoma cells via downregulation of microRNA‐27a. Phytother Res 2020; 34:1629-1637. [PMID: 32067269 DOI: 10.1002/ptr.6629] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 01/19/2020] [Accepted: 01/21/2020] [Indexed: 12/11/2022]
Affiliation(s)
- Zhifeng Han
- Department of Thoracic SurgeryChina‐Japan Union Hospital of Jilin University Changchun China
| | - Jingzhe Zhang
- Department of OrthopedicsChina‐Japan Union Hospital of Jilin University Changchun China
| | - Kun Zhang
- Department of Central LaboratoryThe Second Hospital of Jilin University Changchun China
| | - Yinghao Zhao
- Department of Thoracic SurgeryThe Second Hospital of Jilin University Changchun China
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He W, Yuan K, Ji B, Han Y, Li J. Protective effects of curcumin against neuroinflammation induced by Aβ25-35 in primary rat microglia: modulation of high-mobility group box 1, toll-like receptor 4 and receptor for advanced glycation end products expression. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:88. [PMID: 32175381 DOI: 10.21037/atm.2019.12.147] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Background Activated microglia induced by amyloid-beta (Aβ) release proinflammatory cytokines that can induce neurotoxicity. High-mobility group box 1 protein (HMGB1) and HMGB1-mediated inflammatory responses have been attributed with memory impairment in patients with Alzheimer's disease (AD). There is accumulating evidence to suggest curcumin is a potent anti-inflammatory polyphenol. However, whether curcumin could effectively inhibit inflammation through the suppression of HMGB1 production or HMGB1-mediated inflammatory responses in Aβ-activated microglia is still unclear. Methods Primary microglia were prepared from the cerebral cortices of one- to three-day-old Sprague Dawley rats. The microglia were cultured and treated with Aβ25-35 50 µM for 24 h to prove a toxic effect. Curcumin 10 µM was administrated 1 h before Aβ25-35 treatment. The levels of HMGB1, interleukin-1β (IL-1β), and tumor necrosis factor-α (TNF-α) in the culture medium were analyzed by ELISA. Western blotting was conducted to assess the expression level of toll-like receptor 4 (TLR4) and the receptor for advanced glycation end products (RAGE). In addition, PC12 cells were treated with conditioned medium from microglia treated with Aβ25-35 or Aβ25-35 and curcumin, and cell viability was subsequently assessed by MTT. Results Curcumin was found to significantly inhibit HMGB1 expression and release in Aβ25-35-stimulated microglia. Pretreatment with curcumin reduced TLR4 and RAGE expression. Proinflammatory cytokines such as IL-1β and TNF-α were also remarkably reduced by curcumin. In addition, curcumin protected neurons from indirect toxicity mediated by Aβ25-35-treated microglia. Conclusions Curcumin effectively inhibits Aβ25-35-induced neuroinflammation in microglia, partly by suppressing the expression of HMGB1, TLR4, and RAGE.
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Affiliation(s)
- Wei He
- Department of Anesthesiology and Perioperative Medicine, Critical Care and Pain Medicine, The Second Affiliated Hospital & Yuying Children Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Kaiming Yuan
- Department of Anesthesiology and Perioperative Medicine, Critical Care and Pain Medicine, The Second Affiliated Hospital & Yuying Children Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Bin Ji
- Department of Anesthesiology and Perioperative Medicine, Critical Care and Pain Medicine, The Second Affiliated Hospital & Yuying Children Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Yuan Han
- Department of Anesthesiology and Perioperative Medicine, Critical Care and Pain Medicine, The Second Affiliated Hospital & Yuying Children Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Jun Li
- Department of Anesthesiology and Perioperative Medicine, Critical Care and Pain Medicine, The Second Affiliated Hospital & Yuying Children Hospital of Wenzhou Medical University, Wenzhou 325027, China
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Huang P, Zheng N, Zhou HB, Huang J. Curcumin inhibits BACE1 expression through the interaction between ERβ and NFκB signaling pathway in SH-SY5Y cells. Mol Cell Biochem 2019; 463:161-173. [DOI: 10.1007/s11010-019-03638-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Accepted: 09/25/2019] [Indexed: 12/27/2022]
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Yang GJ, Liu H, Ma DL, Leung CH. Rebalancing metal dyshomeostasis for Alzheimer's disease therapy. J Biol Inorg Chem 2019; 24:1159-1170. [PMID: 31486954 DOI: 10.1007/s00775-019-01712-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 07/29/2019] [Indexed: 12/26/2022]
Abstract
Alzheimer's disease (AD) is a type of neurodegenerative malady that is associated with the accumulation of amyloid plaques. Metal ions are critical for the development and upkeep of brain activity, but metal dyshomeostasis can contribute to the development of neurodegenerative diseases, including AD. This review highlights the association between metal dyshomeostasis and AD pathology, the feasibility of rebalancing metal homeostasis as a therapeutic strategy for AD, and a survey of current drugs that action via rebalancing metal homeostasis. Finally, we discuss the challenges that should be overcome by researchers in the future to enable the practical use of metal homeostasis rebalancing agents for clinical application.
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Affiliation(s)
- Guan-Jun Yang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, 999078, Macau SAR, China
| | - Hao Liu
- Department of Chemistry, Hong Kong Baptist University, Kowloon, 999077, Hong Kong SAR, China
| | - Dik-Lung Ma
- Department of Chemistry, Hong Kong Baptist University, Kowloon, 999077, Hong Kong SAR, China.
| | - Chung-Hang Leung
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, 999078, Macau SAR, China.
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Bhat A, Mahalakshmi AM, Ray B, Tuladhar S, Hediyal TA, Manthiannem E, Padamati J, Chandra R, Chidambaram SB, Sakharkar MK. Benefits of curcumin in brain disorders. Biofactors 2019; 45:666-689. [PMID: 31185140 DOI: 10.1002/biof.1533] [Citation(s) in RCA: 97] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 05/22/2019] [Indexed: 12/13/2022]
Abstract
Curcumin is widely consumed in Asia either as turmeric directly or as one of the culinary ingredients in food recipes. The benefits of curcumin in different organ systems have been reported extensively in several neurological diseases and cancer. Curcumin has got its global recognition because of its strong antioxidant, anti-inflammatory, anti-cancer, and antimicrobial activities. Additionally, it is used in diabetes and arthritis as well as in hepatic, renal, and cardiovascular diseases. Recently, there is growing attention on usage of curcumin to prevent or delay the onset of neurodegenerative diseases. This review summarizes available data from several recent studies on curcumin in various neurological diseases such as Alzheimer's disease, Parkinson's disease, Multiple Sclerosis, Huntington's disease, Prions disease, stroke, Down's syndrome, autism, Amyotrophic lateral sclerosis, anxiety, depression, and aging. Recent advancements toward increasing the therapeutic efficacy of curcuma/curcumin formulation and the novel delivery strategies employed to overcome its minimal bioavailability and toxicity studies have also been discussed. This review also summarizes the ongoing clinical trials on curcumin for different neurodegenerative diseases and patent details of curcuma/curcumin in India.
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Affiliation(s)
- Abid Bhat
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Mysuru, India
- Central Animal Facility, JSS Academy of Higher Education & Research, Mysuru, India
| | - Arehally M Mahalakshmi
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Mysuru, India
- Central Animal Facility, JSS Academy of Higher Education & Research, Mysuru, India
| | - Bipul Ray
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Mysuru, India
- Central Animal Facility, JSS Academy of Higher Education & Research, Mysuru, India
| | - Sunanda Tuladhar
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Mysuru, India
- Central Animal Facility, JSS Academy of Higher Education & Research, Mysuru, India
| | - Tousif A Hediyal
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Mysuru, India
| | - Esther Manthiannem
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Mysuru, India
| | - Jagadeeswari Padamati
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Mysuru, India
| | - Ramesh Chandra
- Drug Discovery & Development Laboratory, Department of Chemistry, University of Delhi, Delhi, India
- Dr. B. R. Ambedkar Centre for Biomedical Research University of Delhi, Delhi, India
| | - Saravana B Chidambaram
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Mysuru, India
- Central Animal Facility, JSS Academy of Higher Education & Research, Mysuru, India
| | - Meena K Sakharkar
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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Abdul Manap AS, Wei Tan AC, Leong WH, Yin Chia AY, Vijayabalan S, Arya A, Wong EH, Rizwan F, Bindal U, Koshy S, Madhavan P. Synergistic Effects of Curcumin and Piperine as Potent Acetylcholine and Amyloidogenic Inhibitors With Significant Neuroprotective Activity in SH-SY5Y Cells via Computational Molecular Modeling and in vitro Assay. Front Aging Neurosci 2019; 11:206. [PMID: 31507403 PMCID: PMC6718453 DOI: 10.3389/fnagi.2019.00206] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 07/22/2019] [Indexed: 12/21/2022] Open
Abstract
Hallmarks of Alzheimer's disease (AD) pathology include acetylcholine (ACh) deficiency and plaque deposition. Emerging studies suggest that acetylcholinesterase (AChE) may interact with amyloid β (Aβ) to promote aggregation of insoluble Aβ plaques in brains of patients. Current therapeutic options available for AD patients, such as AChE inhibitors, provide only symptomatic relief. In this study, we screened four natural compounds believed to harbor cognitive benefits-curcumin, piperine, bacoside A, and chebulinic acid. In the first section, preliminary screening through computational molecular docking simulations gauged the suitability of the compounds as novel AChE inhibitors. From here, only compounds that met the in silico selection criteria were selected for the second section through in vitro investigations, including AChE enzyme inhibition assay, 3-(4,5-dimenthylthiazol-2-yl)-2,5-dimethyltetrazolium bromide (MTT) assay, Thioflavin T (ThT) assay, and biochemical analysis via a neuronal cell line model. Of the four compounds screened, only curcumin (-9.6 kcal/mol) and piperine (-10.5 kcal/mol) showed favorable binding affinities and interactions towards AChE and were hence selected. In vitro AChE inhibition demonstrated that combination of curcumin and piperine showed greater AChE inhibition with an IC50 of 62.81 ± 0.01 μg/ml as compared to individual compounds, i.e., IC50 of curcumin at 134.5 ± 0.06 μg/ml and IC50 of piperine at 76.6 ± 0.08 μg/ml. In the SH-SY5Y cell model, this combination preserved cell viability up to 85%, indicating that the compounds protect against Aβ-induced neuronal damage (p < 0.01). Interestingly, our results also showed that curcumin and piperine achieved a synergistic effect at 35 μM with an synergism quotient (SQ) value of 1.824. Synergistic behavior indicates that the combination of these two compounds at lower concentrations may provide a better outcome than singularly used for Aβ proteins. Combined curcumin and piperine managed to inhibit aggregation (reduced ThT intensity at 0.432 a.u.; p < 0.01) as well as disaggregation (reduced ThT intensity at 0.532 a.u.; p < 0.01) of fibrillar Aβ42. Furthermore, combined curcumin and piperine reversed the Aβ-induced up-regulation of neuronal oxidative stress (p < 0.01). In conclusion, curcumin and piperine demonstrated promising neuroprotective effects, whereas bacoside A and chebulinic acid may not be suitable lead compounds. These results are hoped to advance the field of natural products research as potentially therapeutic and curative AD agents.
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Affiliation(s)
- Aimi Syamima Abdul Manap
- School of Biosciences, Faculty of Health and Sciences, Taylor’s University, Subang Jaya, Malaysia
| | - Amelia Cheng Wei Tan
- School of Biosciences, Faculty of Health and Sciences, Taylor’s University, Subang Jaya, Malaysia
| | - Weng Hhin Leong
- School of Biosciences, Faculty of Health and Sciences, Taylor’s University, Subang Jaya, Malaysia
| | - Adeline Yoke Yin Chia
- School of Biosciences, Faculty of Health and Sciences, Taylor’s University, Subang Jaya, Malaysia
| | - Shantini Vijayabalan
- School of Pharmacy, Faculty of Health and Sciences, Taylor’s University, Subang Jaya, Malaysia
| | - Aditya Arya
- School of Medicine, Faculty of Health and Sciences, Taylor’s University, Subang Jaya, Malaysia
| | - Eng Hwa Wong
- School of Medicine, Faculty of Health and Sciences, Taylor’s University, Subang Jaya, Malaysia
| | - Farzana Rizwan
- School of Medicine, Faculty of Health and Sciences, Taylor’s University, Subang Jaya, Malaysia
| | - Umesh Bindal
- School of Medicine, Faculty of Health and Sciences, Taylor’s University, Subang Jaya, Malaysia
| | - Shajan Koshy
- School of Medicine, Faculty of Health and Sciences, Taylor’s University, Subang Jaya, Malaysia
| | - Priya Madhavan
- School of Medicine, Faculty of Health and Sciences, Taylor’s University, Subang Jaya, Malaysia
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Fan S, Zheng Y, Liu X, Fang W, Chen X, Liao W, Jing X, Lei M, Tao E, Ma Q, Zhang X, Guo R, Liu J. Curcumin-loaded PLGA-PEG nanoparticles conjugated with B6 peptide for potential use in Alzheimer's disease. Drug Deliv 2019; 25:1091-1102. [PMID: 30107760 PMCID: PMC6116673 DOI: 10.1080/10717544.2018.1461955] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Alzheimer's disease is a neurodegenerative disorder mainly characterized by β-amyloid deposit and tau hyperphosphorylation with no curative treatments. Curcumin (Cur) has been proved to have potential use in Alzheimer's disease with its anti-amyloid, anti-inflammatory, and anti-oxidant properties, etc. However, its hydrophobicity and low bioavailability hinder its application. In this paper, we designed a novel brain-target nanoparticle, poly(lactide-co-glycolide)-block-poly(ethylene glycol) (PLGA-PEG) conjugated with B6 peptide and was loaded with Cur (PLGA-PEG-B6/Cur) and administered it into HT22 cells and APP/PS1 Al transgenic mice. The in vitro assays including dynamic light scattering (DLS), flow cytometry (FCM), red blood cell (RBC) lysis, and thromboelastography (TEG) analysis indicated that this nanoparticle could narrow the diameter of Cur, increase its cellular uptake and possess good blood compatibility. The results from Morris water maze proved that PLGA-PEG-B6/Cur could tremendously improve the spatial learning and memory capability of APP/PS1 mice, compared with native Cur. The ex vivo assays including Bielschowsky silver staining, immunostaining, and western blotting demonstrated that PLGA-PEG-B6/Cur could reduce hippocampal β-amyloid formation and deposit and tau hyperphosphorylation. Thus, we suggested that PLGA-PEG-B6/Cur nanoparticles would be of potential and promising use for the treatment of Alzheimer's disease.
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Affiliation(s)
- Shengnuo Fan
- a Department of Neurology , Sun Yat-sen Memorial Hospital, Sun Yat-sen University , Guangzhou , China
| | - Yuqiu Zheng
- a Department of Neurology , Sun Yat-sen Memorial Hospital, Sun Yat-sen University , Guangzhou , China
| | - Xuan Liu
- b Key Laboratory of Biomaterials of Guangdong Higher Education Institutes Department of Biomedical Engineering , Jinan University , Guangzhou , China
| | - Wenli Fang
- a Department of Neurology , Sun Yat-sen Memorial Hospital, Sun Yat-sen University , Guangzhou , China
| | - Xiaoyu Chen
- a Department of Neurology , Sun Yat-sen Memorial Hospital, Sun Yat-sen University , Guangzhou , China.,c Zhongshan City People's Hospital , Zhongshan City , Guangdong Province , China
| | - Wang Liao
- a Department of Neurology , Sun Yat-sen Memorial Hospital, Sun Yat-sen University , Guangzhou , China
| | - Xiuna Jing
- a Department of Neurology , Sun Yat-sen Memorial Hospital, Sun Yat-sen University , Guangzhou , China
| | - Ming Lei
- a Department of Neurology , Sun Yat-sen Memorial Hospital, Sun Yat-sen University , Guangzhou , China
| | - Enxiang Tao
- a Department of Neurology , Sun Yat-sen Memorial Hospital, Sun Yat-sen University , Guangzhou , China
| | - Qiulan Ma
- d Department of Neurology , University of California , Los Angeles , CA , USA
| | - Xingmei Zhang
- e Applied Immunology and Immunotherapy, Department of Clinical Neuroscience , Karolinska Institute, Center for Molecular Medicine, Karolinska University Hospital at Solna , Stockholm , Sweden
| | - Rui Guo
- b Key Laboratory of Biomaterials of Guangdong Higher Education Institutes Department of Biomedical Engineering , Jinan University , Guangzhou , China
| | - Jun Liu
- a Department of Neurology , Sun Yat-sen Memorial Hospital, Sun Yat-sen University , Guangzhou , China.,f Laboratory of RNA and Major Diseases of Brain and Heart , Sun Yat-sen Memorial Hospital, Sun Yat-sen University , Guangzhou , China.,g Guangdong Province Key Laboratory of Brain Function and Disease , Zhongshan School of Medicine, Sun Yat-sen University , Guangzhou , China
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Szczechowiak K, Diniz BS, Leszek J. Diet and Alzheimer's dementia - Nutritional approach to modulate inflammation. Pharmacol Biochem Behav 2019; 184:172743. [PMID: 31356838 DOI: 10.1016/j.pbb.2019.172743] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Revised: 05/13/2019] [Accepted: 07/24/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND Alzheimer's disease (AD) is the most common neurodegenerative disease causing dementia in the elderly population. Due to the fact that there is still no cure for Alzheimer's dementia and available treatment strategies bring only symptomatic benefits, there is a pressing demand for other effective strategies such as diet. Since the inflammation hypothesis gained considerable significance in the AD pathogenesis, elucidating the modulatory role of dietary factors on inflammation may help to prevent, delay the onset and slow the progression of AD. Current evidence clearly shows that synergistic action of combined supplementation and complex dietary patterns provides stronger benefits than any single component considered separately. Recent studies reveal the growing importance of novel factors such as dietary advanced glycation end products (d-AGE), gut microbiota, butyrate and vitamin D3 on inflammatory processes in AD. CONCLUSION This paper summarizes the available evidence of pro- and anti-inflammatory activity of some dietary components including fatty acids, vitamins, flavonoids, polyphenols, probiotics and d-AGE, and their potential for AD prevention and treatment.
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Affiliation(s)
| | - Breno S Diniz
- Department of Psychiatry, Faculty of Medicine, University of Toronto, Toronto, ON, Canada; Centre for Addiction and Mental Health, Toronto, ON, Canada
| | - Jerzy Leszek
- Department and Clinic of Psychiatry, Wroclaw Medical University, Wroclaw, Poland.
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Gaudreault R, Mousseau N. Mitigating Alzheimer’s Disease with Natural Polyphenols: A Review. Curr Alzheimer Res 2019; 16:529-543. [DOI: 10.2174/1567205016666190315093520] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 02/14/2019] [Accepted: 03/13/2019] [Indexed: 11/22/2022]
Abstract
:According to Alzheimer’s Disease International (ADI), nearly 50 million people worldwide were living with dementia in 2017, and this number is expected to triple by 2050. Despite years of research in this field, the root cause and mechanisms responsible for Alzheimer’s disease (AD) have not been fully elucidated yet. Moreover, promising preclinical results have repeatedly failed to translate into patient treatments. Until now, none of the molecules targeting AD has successfully passed the Phase III trial. Although natural molecules have been extensively studied, they normally require high concentrations to be effective; alternately, they are too large to cross the blood-brain barrier (BBB).:In this review, we report AD treatment strategies, with a virtually exclusive focus on green chemistry (natural phenolic molecules). These include therapeutic strategies for decreasing amyloid-β (Aβ) production, preventing and/or altering Aβ aggregation, and reducing oligomers cytotoxicity such as curcumin, (-)-epigallocatechin-3-gallate (EGCG), morin, resveratrol, tannic acid, and other natural green molecules. We also examine whether consideration should be given to potential candidates used outside of medicine and nutrition, through a discussion of two intermediate-sized green molecules, with very similar molecular structures and key properties, which exhibit potential in mitigating Alzheimer’s disease.
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Affiliation(s)
- Roger Gaudreault
- Department of Physics, Universit�© de Montr�©al, Case Postale 6128, Succursale Centre-ville, Montreal (QC), Canada
| | - Normand Mousseau
- Department of Physics, Universit�© de Montr�©al, Case Postale 6128, Succursale Centre-ville, Montreal (QC), Canada
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Avenanthramide-C Restores Impaired Plasticity and Cognition in Alzheimer's Disease Model Mice. Mol Neurobiol 2019; 57:315-330. [PMID: 31332763 DOI: 10.1007/s12035-019-01707-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 07/10/2019] [Indexed: 12/23/2022]
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disease characterized by cognitive decline and dementia with no effective treatment. Here, we investigated a novel compound from oats named avenanthramide-C (Avn-C), on AD-related memory impairment and behavioral deficits in transgenic mouse models. Acute hippocampal slices of wild-type or AD transgenic mice were treated with Avn-C in the presence or absence of oligomeric Aβ42. LTP analyses and immunoblotting were performed to assess the effect of Avn-C on Aβ-induced memory impairment. To further investigate the effect of Avn-C on impaired memory and Aβ pathology, two different AD transgenic mice (Tg2576 and 5XFAD) models were orally treated with either Avn-C or vehicle for 2 weeks. They were then assessed for the effect of the treatment on neuropathologies and behavioral impairments. Avn-C reversed impaired LTP in both ex vivo- and in vivo-treated AD mice hippocampus. Oral administration (6 mg/kg per day) for 2 weeks in AD mice leads to improved recognition and spatial memory, reduced caspase-3 cleavage, reversed neuroinflammation, and to accelerated glycogen synthase kinase-3β (pS9GSK-3β) and interleukin (IL-10) levels. Avn-C exerts its beneficial effects by binding to α1A adrenergic receptors to stimulate adenosine monophosphate-activated kinase (AMPK). All of the beneficial effects of Avn-C on LTP retrieval could be blocked by prazosin hydrochloride, a specific inhibitor of α1A adrenergic receptors. Our findings provide evidence, for the first time, that oats' Avn-C reverses the AD-related memory and behavioral impairments, and establish it as a potential candidate for Alzheimer's disease drug development.
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Khalil MNA, Choucry MA, El Senousy AS, Hassan A, El-Marasy SA, El Awdan SA, Omar FA. Ambrosin, a potent NF-κβ inhibitor, ameliorates lipopolysaccharide induced memory impairment, comparison to curcumin. PLoS One 2019; 14:e0219378. [PMID: 31276550 PMCID: PMC6611615 DOI: 10.1371/journal.pone.0219378] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 06/23/2019] [Indexed: 01/05/2023] Open
Abstract
Despite its poor bioavailability, curcumin is a promising natural polyphenol targeting NF-κβ. NF-κβ is a target for new therapeutics because it plays a pivotal role in the pathophysiology of Alzheimer disease (AD). In contrast, ambrsoin, a sesquiterpene lactone which is a potent NF-κβ inhibitor, is scarcely studied in AD models. The current work aims to assess the efficacy of ambrosin as a possible remedy for AD. In silico studies showed that bioavailability and BBB permeability could be favorable for ambrosin over curcumin. Memory impairment was induced in mice by single intraperitoneal injection of LPS (0.4 mg/kg). Treated groups received curcumin (100 mg/kg) or ambrosin at doses (5 or 10 mg/kg) for 7 days. Mice in treated groups showed a significant improvement in memory functions during Morris water maze and object recognition tests. Curcumin and ambrosin (10 mg/kg) inhibited the upsurge of NF-κβp65 transcript and protein levels. Consequently, downstream pro-inflammatory and nitrosative mediators were inhibited, namely, TNF-α, IL-1β, COX-2 and iNOS. BACE1 was inhibited, thereby reducing amyloid plaques (Aβ) deposition and eventually reducing inflammation and apoptosis of neurons as revealed by immunohistopathological examination. In conclusion, ambrosin can be repurposed as AD remedy after further pharmacokinetic/pharamacodynamic assessments. It could serve as an additional lead drug for AD therapeutics.
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Affiliation(s)
- Mohammed N. A. Khalil
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
- * E-mail:
| | - Mouchira A. Choucry
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Amira S. El Senousy
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Azza Hassan
- Pathology Department, Faculty of Veterinary Medicine, Cairo University, Giza Square, Giza, Egypt
| | | | | | - Farghaly A. Omar
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Assiut University, Assiut, Egypt
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Luo T, Bu L, Peng S, Zhang Y, Zhou Z, Li G, Huang J. One-step microwave-assisted preparation of oxygen-rich multifunctional carbon quantum dots and their application for Cu 2+-curcumin detection. Talanta 2019; 205:120117. [PMID: 31450427 DOI: 10.1016/j.talanta.2019.120117] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 06/28/2019] [Accepted: 07/03/2019] [Indexed: 12/27/2022]
Abstract
Carbon quantum dots (CQDs), owing to its unique optical properties, have achieved tremendous progress for the detection of different metal ions, organic small molecules, macromolecules, etc. Here we synthesized fluorescent CQDs by a simple one-step microwave-assisted method using 3,4-Dihydroxy-l-phenylalanine (levodopa) as the carbon resource. The CQDs proved to be a multifunctional probe which can be used for detection of various species including copper ion, biothiols and curcumin, via different mechanisms. The selective detection of copper ion was obtained by fluorescence quenching and the mechanism was proved to be static quenching by electrostatic interaction. The fluorescence of levoCQDs-Cu2+ system can be recovered by biothiols (GSH, Cys and Hcy), implying levoCQDs-Cu2+ system can also be applied for biothiols detection. The excitation spectrum of levoCQDs had a good overlap with the absorption peak of curcumin, making it as a suitable curcumin probe by fluorescence quenching via inner filter effect (IFE). Furthermore, the levoCQDs can also track the formation of Cu2+-Curcumin complexes by restoring the fluorescence of the CQDs in levoCQDs and Cu2+-Curcumin system, and this feature may be exploited in the mechanism study of Cu2+-Curcumin in the treatment of Alzheimer's disease. The fluorescent levoCQDs were finally used for Cu2+ and curcumin detection in some real samples including different types of environmental water samples and human serum samples, providing a convenient strategy to monitor Cu2+and curcumin in environmental and biological samples.
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Affiliation(s)
- Tao Luo
- Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, College of Biology, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | - Lingli Bu
- Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, College of Biology, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | - Siyu Peng
- Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, College of Biology, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | - Yaya Zhang
- Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, College of Biology, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | - Zhi Zhou
- Hunan Optical Agriculture Engineering Technology Research Center, Hunan Agricultural University, Changsha, Hunan Province 410128, PR China
| | - Guorui Li
- Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, College of Biology, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China.
| | - Jing Huang
- Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, College of Biology, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China.
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Teter B, Morihara T, Lim GP, Chu T, Jones MR, Zuo X, Paul RM, Frautschy SA, Cole GM. Curcumin restores innate immune Alzheimer's disease risk gene expression to ameliorate Alzheimer pathogenesis. Neurobiol Dis 2019; 127:432-448. [PMID: 30951849 PMCID: PMC8092921 DOI: 10.1016/j.nbd.2019.02.015] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Revised: 02/15/2019] [Accepted: 02/20/2019] [Indexed: 01/28/2023] Open
Abstract
Alzheimer's disease (AD) genetics implies a causal role for innate immune genes, TREM2 and CD33, products that oppose each other in the downstream Syk tyrosine kinase pathway, activating microglial phagocytosis of amyloid (Aβ). We report effects of low (Curc-lo) and high (Curc-hi) doses of curcumin on neuroinflammation in APPsw transgenic mice. Results showed that Curc-lo decreased CD33 and increased TREM2 expression (predicted to decrease AD risk) and also increased TyroBP, which controls a neuroinflammatory gene network implicated in AD as well as phagocytosis markers CD68 and Arg1. Curc-lo coordinately restored tightly correlated relationships between these genes' expression levels, and decreased expression of genes characteristic of toxic pro-inflammatory M1 microglia (CD11b, iNOS, COX-2, IL1β). In contrast, very high dose curcumin did not show these effects, failed to clear amyloid plaques, and dysregulated gene expression relationships. Curc-lo stimulated microglial migration to and phagocytosis of amyloid plaques both in vivo and in ex vivo assays of sections of human AD brain and of mouse brain. Curcumin also reduced levels of miR-155, a micro-RNA reported to drive a neurodegenerative microglial phenotype. In conditions without amyloid (human microglial cells in vitro, aged wild-type mice), Curc-lo similarly decreased CD33 and increased TREM2. Like curcumin, anti-Aβ antibody (also reported to engage the Syk pathway, increase CD68, and decrease amyloid burden in human and mouse brain) increased TREM2 in APPsw mice and decreased amyloid in human AD sections ex vivo. We conclude that curcumin is an immunomodulatory treatment capable of emulating anti-Aβ vaccine in stimulating phagocytic clearance of amyloid by reducing CD33 and increasing TREM2 and TyroBP, while restoring neuroinflammatory networks implicated in neurodegenerative diseases.
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Affiliation(s)
- B Teter
- Departments of Neurology, Geriatric Research Education and Clinical Centerand, University of California, Los Angeles (UCLA), United States of America; Departments of Veterans Affairs Greater Los Angeles Healthcare System, Geriatric Research Education and Clinical Center, University of California, Los Angeles (UCLA), United States of America; Alzheimer's Translational Center, Veterans Administration (Research 151), Bldg. 114, Rm. 114-1, 11301 Wilshire Blvd, Los Angeles, CA 90073, United States of America.
| | - T Morihara
- Departments of Neurology, Geriatric Research Education and Clinical Centerand, University of California, Los Angeles (UCLA), United States of America; Departments of Veterans Affairs Greater Los Angeles Healthcare System, Geriatric Research Education and Clinical Center, University of California, Los Angeles (UCLA), United States of America.
| | - G P Lim
- Departments of Neurology, Geriatric Research Education and Clinical Centerand, University of California, Los Angeles (UCLA), United States of America; Departments of Veterans Affairs Greater Los Angeles Healthcare System, Geriatric Research Education and Clinical Center, University of California, Los Angeles (UCLA), United States of America
| | - T Chu
- Departments of Neurology, Geriatric Research Education and Clinical Centerand, University of California, Los Angeles (UCLA), United States of America; Departments of Veterans Affairs Greater Los Angeles Healthcare System, Geriatric Research Education and Clinical Center, University of California, Los Angeles (UCLA), United States of America
| | - M R Jones
- Departments of Neurology, Geriatric Research Education and Clinical Centerand, University of California, Los Angeles (UCLA), United States of America
| | - X Zuo
- Departments of Neurology, Geriatric Research Education and Clinical Centerand, University of California, Los Angeles (UCLA), United States of America; Departments of Veterans Affairs Greater Los Angeles Healthcare System, Geriatric Research Education and Clinical Center, University of California, Los Angeles (UCLA), United States of America
| | - R M Paul
- Departments of Neurology, Geriatric Research Education and Clinical Centerand, University of California, Los Angeles (UCLA), United States of America; Departments of Medicine, University of California, Los Angeles (UCLA), United States of America
| | - S A Frautschy
- Departments of Neurology, Geriatric Research Education and Clinical Centerand, University of California, Los Angeles (UCLA), United States of America; Departments of Medicine, University of California, Los Angeles (UCLA), United States of America; Departments of Veterans Affairs Greater Los Angeles Healthcare System, Geriatric Research Education and Clinical Center, University of California, Los Angeles (UCLA), United States of America.
| | - G M Cole
- Departments of Neurology, Geriatric Research Education and Clinical Centerand, University of California, Los Angeles (UCLA), United States of America; Departments of Medicine, University of California, Los Angeles (UCLA), United States of America; Departments of Veterans Affairs Greater Los Angeles Healthcare System, Geriatric Research Education and Clinical Center, University of California, Los Angeles (UCLA), United States of America.
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77
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Molavipordanjani S, Emami S, Hosseinimehr SJ. 99mTc-labeled Small Molecules for Diagnosis of Alzheimer’s Disease: Past, Recent and Future Perspectives. Curr Med Chem 2019; 26:2166-2189. [DOI: 10.2174/0929867325666180410104023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 01/21/2018] [Accepted: 04/05/2018] [Indexed: 01/22/2023]
Abstract
Background:
Alzheimer’s disease (AD) is an age-related progressive neurodegenerative disease.
Its prominent hallmarks are extracellular deposition of β-amyloids (amyloid plaques), intracellular
neurofibrillary tangles (NTFs), neurodegeneration and finally loss of cognitive function. Hence, AD diagnosis
in the early stage and monitoring of the disease are of great importance.
Methods:
In this review article, we have reviewed recent efforts for design, synthesis and evaluation of
99mTc labeled small molecule for AD imaging purposes.
Results:
These small molecules include derivatives of Congo red, benzothiazole, benzofuran, benzoxazole,
naphthalene, biphenyl, chalcone, flavone, aurone, stilbene, curcumin, dibenzylideneacetone,
quinoxaline, etc. The different aspects of 99mTc-labeled small molecules including chemical structure,
their affinity toward amyloid plaques, BBB permeation and in vivo/vitro stability will be discussed.
Conclusion:
The findings of this review confirm the importance of 99mTc-labeled small molecules for AD
imaging. Future studies based on the pharmacophore of these designed compounds are needed for improvement
of these molecules for clinical application.
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Affiliation(s)
- Sajjad Molavipordanjani
- Department of Radiopharmacy, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Saeed Emami
- Department of Medicinal Chemistry and Pharmaceutical Sciences Research Center, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Seyed Jalal Hosseinimehr
- Department of Radiopharmacy, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
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78
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Sun JL, Ji HF, Shen L. Impact of cooking on the antioxidant activity of spice turmeric. Food Nutr Res 2019; 63:3451. [PMID: 31205460 PMCID: PMC6545298 DOI: 10.29219/fnr.v63.3451] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 03/05/2019] [Accepted: 03/11/2019] [Indexed: 01/08/2023] Open
Abstract
Curcuminoids, as the main ingredient of turmeric, are popularly used in food additives and condiments, and are widely accepted to be beneficial for human health for their antioxidant activity. However, curcuminoids are highly susceptible in terms of thermal-induced degradation, and curry is usually boiled, roasted, or fried in the use of food additives and condiments. Thus, it is interesting to explore the effect of cooking on the antioxidant activity of curcuminoids. In the present study, the total antioxidant capacity (T-AOC) of cooked curcuminoids (boiled curcuminoids, roasted curcuminoids, and fried curcuminoids) processed through three heating conditions, and their protective effects against oxidative damage to rat pheochromocytoma (PC12) cells, a well-established neuronal model, were evaluated. It was found that cooking slightly lowered the T-AOC of curcuminoids, with boiled curcuminoids being relatively stronger than roasted curcuminoids, and fried curcuminoids being the weakest form. Both boiled and roasted curcuminoids could significantly improve cell viability, mitigate intracellular accumulation of reactive oxygen species and reduce malondialdehyde activity, reduce caspase-3 and caspase-9 protein expression, and increase superoxide dismutase activity of PC12 cells compared with the control group. In comparison with parent curcuminoids, the protective effects of cooked curcuminoids got relatively lower overall, with boiled curcuminoids being relatively stronger than roasted curcuminoids. In conclusion, the cooked curcuminoids, including boiled and roasted forms, still have antioxidant and neuroprotective activity.
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Affiliation(s)
- Jian-Long Sun
- Institute of Biomedical Research, Shandong University of Technology, Zibo, Shandong, People's Republic of China.,Zibo Key Laboratory for Neurodegenerative Diseases Drug Development, Shandong Provincial Research Center for Bioinformatic Engineering and Technique, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, People's Republic of China
| | - Hong-Fang Ji
- Institute of Biomedical Research, Shandong University of Technology, Zibo, Shandong, People's Republic of China.,Zibo Key Laboratory for Neurodegenerative Diseases Drug Development, Shandong Provincial Research Center for Bioinformatic Engineering and Technique, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, People's Republic of China
| | - Liang Shen
- Institute of Biomedical Research, Shandong University of Technology, Zibo, Shandong, People's Republic of China.,Zibo Key Laboratory for Neurodegenerative Diseases Drug Development, Shandong Provincial Research Center for Bioinformatic Engineering and Technique, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, People's Republic of China
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79
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Zholos AV, Moroz OF, Storozhuk MV. Curcuminoids and Novel Opportunities for the Treatment of Alzheimer's Disease: Which Molecules are Actually Effective? Curr Mol Pharmacol 2019; 12:12-26. [PMID: 30318014 DOI: 10.2174/1874467211666181012150847] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Revised: 09/30/2018] [Accepted: 10/08/2018] [Indexed: 12/13/2022]
Abstract
BACKGROUND Millions of people worldwide are suffering from Alzheimer's disease (AD), and there are only symptomatic treatments available for this disease. Thus, there is a great need to identify drugs capable of arresting or reversing AD. Constituents of the spice turmeric, in particular, curcuminoids, seem to be very promising, as evident from in vitro experiments and tests using animal models of AD. However, most of the clinical trials did not reveal any beneficial effects of curcuminoids in the treatment of AD. These controversies, including conflicting results of clinical trials, are thought to be related to bioavailability of curcuminoids, which is low unless it is enhanced by developing a special formulation. However, there is growing evidence suggesting that other reasons may be of even greater importance, but these avenues are less explored. OBJECTIVE Review relevant literature, and analyze potential reasons for the controversial results. METHODOLOGY Recent in vitro and preclinical studies; clinical trials (without a limiting period) were searched in PubMed and Google Scholar. RESULTS While recent in vitro and preclinical studies confirm the therapeutic potential of curcuminoids in the treatment of AD and cognitive dysfunctions, results of corresponding clinical trials remain rather controversial. CONCLUSION The controversial results obtained in the clinical trials may be in part due to particularities of the curcuminoid formulations other than bioavailability. Namely, it seems likely that the various formulations differ in terms of their minor turmeric constituent(s). We hypothesize that these distinctions may be of key importance for efficacy of the particular formulation in clinical trials. A testable approach addressing this hypothesis is suggested.
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Affiliation(s)
- Alexander V Zholos
- A.A. Bogomoletz Institute of Physiology, National Academy of Science of Ukraine, 4 Bogomoletz Street, Kiev 01024, Ukraine.,Taras Shevchenko National University of Kyiv, Educational and Scientific Centre "Institute of Biology and Medicine", 2 Academician Glushkov Avenue, Kiev 03022, Ukraine
| | - Olesia F Moroz
- Taras Shevchenko National University of Kyiv, Educational and Scientific Centre "Institute of Biology and Medicine", 2 Academician Glushkov Avenue, Kiev 03022, Ukraine
| | - Maksim V Storozhuk
- A.A. Bogomoletz Institute of Physiology, National Academy of Science of Ukraine, 4 Bogomoletz Street, Kiev 01024, Ukraine
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80
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Solfrizzi V, Agosti P, Lozupone M, Custodero C, Schilardi A, Valiani V, Sardone R, Dibello V, Di Lena L, Lamanna A, Stallone R, Bellomo A, Greco A, Daniele A, Seripa D, Sabbà C, Logroscino G, Panza F. Nutritional Intervention as a Preventive Approach for Cognitive-Related Outcomes in Cognitively Healthy Older Adults: A Systematic Review. J Alzheimers Dis 2019; 64:S229-S254. [PMID: 29865058 DOI: 10.3233/jad-179940] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The link diet-cognitive function/dementia has been largely investigated in observational studies; however, there was a lack of evidence from randomized clinical trials (RCTs) on the prevention of late-life cognitive disorders though dietary intervention in cognitively healthy older adults. In the present article, we systematically reviewed RCTs published in the last four years (2014-2017) exploring nutritional intervention efficacy in preventing the onset of late-life cognitive disorders and dementia in cognitively healthy subjects aged 60 years and older using different levels of investigation (i.e., dietary pattern changes/medical food/nutraceutical supplementation/multidomain approach and dietary macro- and micronutrient approaches) as well as possible underlying mechanisms of nutritional prevention. From the 35 included RCTs, there was moderate evidence that intervention through dietary pattern changes, medical food/nutraceutical supplementation, and multidomain approach improved specific cognitive domains or cognitive-related blood biomarkers. There was high evidence that protein supplementation improved specific cognitive domains or functional status in prefrail older adults without effect on cognitive function. For fatty acid supplementation, mainly long-chain polyunsaturated fatty acids, there was emerging evidence suggesting an impact of this approach in improving specific cognitive domains, magnetic resonance imaging (MRI) findings, and/or cognitive-related biomarkers also in selected subgroups of older subjects, although some results were conflicting. There was convincing evidence of an impact of non-flavonoid polyphenol and flavonoid supplementations in improving specific cognitive domains and/or MRI findings. Finally, there was only low evidence suggesting efficacy of intervention with homocysteine-related and antioxidant vitamins in improving cognitive functions, dementia incidence, or cognitive-related biomarkers in cognitively healthy older subjects.
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Affiliation(s)
- Vincenzo Solfrizzi
- Geriatric Medicine-Memory Unit and Rare Disease Centre, University of Bari 'Aldo Moro', Bari, Italy.,Geriatric Medicine-Memory Unit and Rare Disease Centre, University of Bari 'Aldo Moro', Bari, Italy
| | - Pasquale Agosti
- Geriatric Medicine-Memory Unit and Rare Disease Centre, University of Bari 'Aldo Moro', Bari, Italy
| | - Madia Lozupone
- Department of Basic Medicine, Neurodegenerative Disease Unit, Neuroscience, and Sense Organs, University of Bari Aldo Moro, Bari, Italy
| | - Carlo Custodero
- Geriatric Medicine-Memory Unit and Rare Disease Centre, University of Bari 'Aldo Moro', Bari, Italy
| | - Andrea Schilardi
- Geriatric Medicine-Memory Unit and Rare Disease Centre, University of Bari 'Aldo Moro', Bari, Italy
| | - Vincenzo Valiani
- Geriatric Medicine-Memory Unit and Rare Disease Centre, University of Bari 'Aldo Moro', Bari, Italy
| | - Rodolfo Sardone
- National Institute of Gastroenterology "Saverio de Bellis", Research Hospital, Castellana Grotte Bari, Italy
| | - Vittorio Dibello
- Department of Interdisciplinary Medicine (DIM), Section of Dentistry, University of Bari Aldo, Moro, Bari, Italy
| | - Luca Di Lena
- National Institute of Gastroenterology "Saverio de Bellis", Research Hospital, Castellana Grotte Bari, Italy
| | - Angela Lamanna
- National Institute of Gastroenterology "Saverio de Bellis", Research Hospital, Castellana Grotte Bari, Italy
| | - Roberta Stallone
- Department of Basic Medicine, Neurodegenerative Disease Unit, Neuroscience, and Sense Organs, University of Bari Aldo Moro, Bari, Italy
| | - Antonello Bellomo
- Department of Clinical and Experimental Medicine, Psychiatric Unit, University of Foggia, Foggia, Italy
| | - Antonio Greco
- Department of Medical Sciences, Geriatric Unit and Laboratory of Gerontology and Geriatrics, IRCCS "Casa Sollievo della Sofferenza", San Giovanni Rotondo, Foggia, Italy
| | - Antonio Daniele
- Institute of Neurology, Catholic University of Sacred Heart, Rome, Italy
| | - Davide Seripa
- Department of Medical Sciences, Geriatric Unit and Laboratory of Gerontology and Geriatrics, IRCCS "Casa Sollievo della Sofferenza", San Giovanni Rotondo, Foggia, Italy
| | - Carlo Sabbà
- Geriatric Medicine-Memory Unit and Rare Disease Centre, University of Bari 'Aldo Moro', Bari, Italy
| | - Giancarlo Logroscino
- Department of Basic Medicine, Neurodegenerative Disease Unit, Neuroscience, and Sense Organs, University of Bari Aldo Moro, Bari, Italy.,Department of Clinical Research in Neurology, University of Bari Aldo Moro, "Pia Fondazione Cardinale G. Panico", Tricase, Lecce, Italy
| | - Francesco Panza
- Department of Basic Medicine, Neurodegenerative Disease Unit, Neuroscience, and Sense Organs, University of Bari Aldo Moro, Bari, Italy.,Department of Medical Sciences, Geriatric Unit and Laboratory of Gerontology and Geriatrics, IRCCS "Casa Sollievo della Sofferenza", San Giovanni Rotondo, Foggia, Italy.,Department of Clinical Research in Neurology, University of Bari Aldo Moro, "Pia Fondazione Cardinale G. Panico", Tricase, Lecce, Italy.,Geriatric Medicine-Memory Unit and Rare Disease Centre, University of Bari 'Aldo Moro', Bari, Italy
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81
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Nikolaeva NS, Maltsev AV, Ovchinnikov RK, Sokolov VB, Aksinenko AY, Bovina EV, Kinzirsky AS. The Study of Cognitive-Stimulating Activity of Fluorinated Tetrahydrocarbazole Derivatives and Behavioral Responses in Transgenic Tg6799 Mice with Alzheimer’s Disease. BIOL BULL+ 2019. [DOI: 10.1134/s1062359019030075] [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]
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82
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Wang C, Cai Z, Wang W, Wei M, Kou D, Li T, Yang Z, Guo H, Le W, Li S. Piperine attenuates cognitive impairment in an experimental mouse model of sporadic Alzheimer's disease. J Nutr Biochem 2019; 70:147-155. [PMID: 31207354 DOI: 10.1016/j.jnutbio.2019.05.009] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 04/25/2019] [Accepted: 05/14/2019] [Indexed: 12/20/2022]
Abstract
Piperine, the major alkaloid constituent of black pepper, has been reported to possess a wide range of pharmacological effects on the central nervous system, including antidepressant, anticonvulsant and anti-ischemic activities. In the present study, we aimed to investigate the therapeutic potential and neuroprotective mechanisms of piperine in an experimental mouse model of sporadic Alzheimer's disease (sAD) induced by intracerebroventricular (ICV) infusion of streptozotocin (STZ). STZ was infused bilaterally at a dose of 1.5 mg/kg/day on day 1 and day 3. From day 8, piperine (2.5-10 mg/kg body weight) was administered intraperitoneally once daily for 15 consecutive days. The locomotor activity and cognitive performance of mice were evaluated using open field test and Morris water maze test, respectively. On day 23, all animals were sacrificed, and the hippocampus was used for biochemical, neurochemical and neuroinflammatory determinations. Our data revealed that the ICV-STZ-infused sAD mouse showed an increased oxidative-nitrosative stress, an altered neurotransmission and an elevated neuroinflammation in hippocampus, as well as significant cognitive deficits. All these alterations can be ameliorated by piperine in a dose-dependent manner. In summary, our findings predict a therapeutic potential of piperine against cognitive deficits in sAD mouse. This effect might be due to its abilities to ameliorate oxidative-nitrosative stress, restore neurotransmission and reduce neuroinflammation.
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Affiliation(s)
- Che Wang
- Department of Medicinal Chemistry, School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China
| | - Zhengxu Cai
- Department of Neurology, the First Affiliated Hospital, Dalian Medical University, Dalian 116011, China
| | - Wei Wang
- Department of Rehabilitation, Affiliated Zhongshan Hospital of Dalian University, Dalian 116001, China
| | - Min Wei
- Liaoning Provincial Center for Clinical Research on Neurological Diseases, the First Affiliated Hospital, Dalian Medical University, Dalian 116011, China; Liaoning Provincial Key Laboratory for Research on the Pathogenic Mechanisms of Neurological Diseases, the First Affiliated Hospital, Dalian Medical University, Dalian 116011, China
| | - Daqing Kou
- Department of Clinical Laboratory, the First Affiliated Hospital, Dalian Medical University, Dalian 116011, China
| | - Tianbai Li
- Liaoning Provincial Center for Clinical Research on Neurological Diseases, the First Affiliated Hospital, Dalian Medical University, Dalian 116011, China; Liaoning Provincial Key Laboratory for Research on the Pathogenic Mechanisms of Neurological Diseases, the First Affiliated Hospital, Dalian Medical University, Dalian 116011, China
| | - Zhaofei Yang
- Liaoning Provincial Center for Clinical Research on Neurological Diseases, the First Affiliated Hospital, Dalian Medical University, Dalian 116011, China; Liaoning Provincial Key Laboratory for Research on the Pathogenic Mechanisms of Neurological Diseases, the First Affiliated Hospital, Dalian Medical University, Dalian 116011, China
| | - Huishu Guo
- Central Laboratory, the First Affiliated Hospital, Dalian Medical University, Dalian 116021, China.
| | - Weidong Le
- Liaoning Provincial Center for Clinical Research on Neurological Diseases, the First Affiliated Hospital, Dalian Medical University, Dalian 116011, China; Liaoning Provincial Key Laboratory for Research on the Pathogenic Mechanisms of Neurological Diseases, the First Affiliated Hospital, Dalian Medical University, Dalian 116011, China.
| | - Song Li
- Liaoning Provincial Center for Clinical Research on Neurological Diseases, the First Affiliated Hospital, Dalian Medical University, Dalian 116011, China; Liaoning Provincial Key Laboratory for Research on the Pathogenic Mechanisms of Neurological Diseases, the First Affiliated Hospital, Dalian Medical University, Dalian 116011, China.
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83
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Hunyadi A. The mechanism(s) of action of antioxidants: From scavenging reactive oxygen/nitrogen species to redox signaling and the generation of bioactive secondary metabolites. Med Res Rev 2019; 39:2505-2533. [PMID: 31074028 DOI: 10.1002/med.21592] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 03/28/2019] [Accepted: 04/09/2019] [Indexed: 12/25/2022]
Abstract
Small molecule, dietary antioxidants exert a remarkably broad range of bioactivities, and many of these can be explained by the influence of antioxidants on the redox homeostasis. Such compounds help to modulate the levels of harmful reactive oxygen/nitrogen species, and therefore participate in the regulation of various redox signaling pathways. However, upon ingestion, antioxidants usually undergo extensive metabolism that can generate a wide range of bioactive metabolites. This makes it difficult, but otherwise a need, to identify the ones responsible for the different activities of antioxidants. By better understanding their ways of action, the use of antioxidants in therapy can be improved. This review provides a summary on the role of the in vivo metabolic changes and the oxidized metabolites on the mechanisms behind the bioactivity of antioxidants. A special attention is given to metabolites described as products of biomimetic oxidative chemical reactions, which can be considered as models of free radical scavenging. During such reactions a wide variety of metabolites are formed, and they can exert completely different specific bioactivities as compared to their parent antioxidants. This implies that exploring the free radical scavenging-related metabolite fingerprint of each antioxidant molecule, collectively defined here as the scavengome, will lead to a deeper understanding of the bioactivity of these compounds. Furthermore, this paper aims to be a working tool for systematic studies on oxidized metabolic fingerprints of antioxidants, which will certainly reveal an often-neglected segment of chemical space that is a treasury of bioactive compounds.
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Affiliation(s)
- Attila Hunyadi
- Institute of Pharmacognosy, Interdisciplinary Excellence Centre, University of Szeged, Eötvös str. 6, H-6720, Szeged, Hungary.,Interdisciplinary Centre for Natural Products, University of Szeged, Eötvös str. 6, H-6720, Szeged, Hungary
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84
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Li G, Zhang N, Geng F, Liu G, Liu B, Lei X, Li G, Chen X. High-throughput metabolomics and ingenuity pathway approach reveals the pharmacological effect and targets of Ginsenoside Rg1 in Alzheimer's disease mice. Sci Rep 2019; 9:7040. [PMID: 31065079 PMCID: PMC6504884 DOI: 10.1038/s41598-019-43537-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 04/23/2019] [Indexed: 01/23/2023] Open
Abstract
Ginsenoside Rg1, a natural triterpenoid saponins compound isolated from the Panax species, has been found to possess neuroprotective properties in neurodegenerative diseases such as Alzheimer's disease (AD). However, its pharmacological mechanism on AD has not been studied. In this study, an ultra-performance liquid chromatography combined with quadrupole time of-flight mass spectrometry (UPLC-Q/TOF-MS) based non-targeted metabolomics strategy was performed to explore the mechanism of Ginsenoside Rg1 protecting against AD mice by characterizing metabolic biomarkers and regulation pathways changes. A total of nineteen potential metabolites in serum were discovered and identified to manifest the difference between wild-type mice and triple transgenic mice in control and model group, respectively. Fourteen potential metabolites involved in ten metabolic pathways such as linoleic acid metabolism, arachidonic acid metabolism, tryptophan metabolism and sphingolipid metabolism were affected by Rg1. From the ingenuity pathway analysis (IPA) platform, the relationship between gene, protein, metabolites alteration and protective activity of ginsenoside Rg1 in AD mice are deeply resolved, which refers to increased level of albumin, amino acid metabolism and molecular transport. In addition, quantitative analysis of key enzymes in the disturbed pathways by proteomics parallel reaction was employed to verify changed metabolic pathway under Ginsenoside Rg1. The UPLC-Q/TOF-MS based serum metabolomics method brings about new insights into the pharmacodynamic studies of Ginsenoside Rg1 on AD mice.
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Affiliation(s)
- Ge Li
- Yunnan Branch, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Xuanwei Avenue 138, Jinghong City, 666100, Yunnan Province, China
| | - Ning Zhang
- College of Jiamusi, Heilongjiang University of Chinese Medicine, Jiamusi, Guanghua Street 39, Qianjin District, Jiamusi City, 154007, Heilongjiang Province, China
| | - Fang Geng
- College of Chemistry & Chemical Engineering, Harbin Normal University, Shida Road No. 1, Limin Economic Development Zone, Harbin, 150025, Heilongjiang Province, China
| | - Guoliang Liu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China
| | - Bin Liu
- College of Jiamusi, Heilongjiang University of Chinese Medicine, Jiamusi, Guanghua Street 39, Qianjin District, Jiamusi City, 154007, Heilongjiang Province, China
| | - Xia Lei
- College of Jiamusi, Heilongjiang University of Chinese Medicine, Jiamusi, Guanghua Street 39, Qianjin District, Jiamusi City, 154007, Heilongjiang Province, China
| | - Guang Li
- Yunnan Branch, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Xuanwei Avenue 138, Jinghong City, 666100, Yunnan Province, China
| | - Xi Chen
- Yunnan Branch, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Xuanwei Avenue 138, Jinghong City, 666100, Yunnan Province, China.
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China.
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85
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Sharman MJ, Verdile G, Kirubakaran S, Parenti C, Singh A, Watt G, Karl T, Chang D, Li CG, Münch G. Targeting Inflammatory Pathways in Alzheimer's Disease: A Focus on Natural Products and Phytomedicines. CNS Drugs 2019; 33:457-480. [PMID: 30900203 DOI: 10.1007/s40263-019-00619-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Studies of the brains of Alzheimer's disease (AD) patients have revealed key neuropathological features, such as the deposition of aggregates of insoluble amyloid-β (Aβ) peptides and neurofibrillary tangles (NFTs). These pathological protein deposits, including Aβ peptides (which form senile plaques) and hyperphosphorylated tau (which aggregates into NFTs), have been assumed to be 'the cause of AD'. Aβ has been extensively targeted to develop an effective disease-modifying therapy, but with limited clinical success. Emerging therapies are also now targeting further pathological processes in AD, including neuroinflammation. This review focuses on the inflammatory and oxidative stress-related changes that occur in AD, and discusses some emerging anti-inflammatory natural products and phytomedicines. Many of the promising compounds are cytokine-suppressive anti-inflammatory drugs (CSAIDs), which target the proinflammatory AP1 and nuclear factor-κB signalling pathways and inhibit the expression of many proinflammatory cytokines, such as interleukin (IL)-1, IL-6, tumour necrosis factor-α, or nitric oxide produced by inducible nitric oxide synthase. However, many of these phytomedicines have not been tested in rigorous clinical trials in AD patients. It is not yet clear if the active compounds reach an effective concentration in the brain (due to limited bioavailability) or if they can slow down AD progression in long-term trials. The authors suggest that it is crucial for both the pharmacological and complementary medicine industries to conduct and fund those studies to significantly advance the field.
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Affiliation(s)
- Matthew J Sharman
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Locked Bag 1322, Launceston, TAS, 7250, Australia
| | - Giuseppe Verdile
- School of Pharmacy and Biomedical Sciences, Curtin Health Innovation Research Institute, Curtin University, Bentley, WA, 6102, Australia
| | - Shanmugam Kirubakaran
- Department of Pharmacology, School of Medicine, Western Sydney University, Campbelltown, NSW, 2560, Australia
| | - Cristina Parenti
- Department of Pharmacology, School of Medicine, Western Sydney University, Campbelltown, NSW, 2560, Australia
| | - Ahilya Singh
- Department of Pharmacology, School of Medicine, Western Sydney University, Campbelltown, NSW, 2560, Australia
| | - Georgina Watt
- Department of Behavioural Neuroscience, School of Medicine, Western Sydney University, Campbelltown, NSW, 2560, Australia
| | - Tim Karl
- Department of Behavioural Neuroscience, School of Medicine, Western Sydney University, Campbelltown, NSW, 2560, Australia
| | - Dennis Chang
- NICM Health Research Institute, Western Sydney University, Campbelltown, NSW, 2560, Australia.,School of Science and Health, Western Sydney University, Campbelltown, NSW, 2560, Australia
| | - Chun Guang Li
- NICM Health Research Institute, Western Sydney University, Campbelltown, NSW, 2560, Australia
| | - Gerald Münch
- Department of Pharmacology, School of Medicine, Western Sydney University, Campbelltown, NSW, 2560, Australia. .,NICM Health Research Institute, Western Sydney University, Campbelltown, NSW, 2560, Australia. .,Pharmacology Unit, School of Medicine, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia.
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86
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Rho T, Choi MS, Jung M, Kil HW, Hong YD, Yoon KD. Identification of fermented tea (Camellia sinensis) polyphenols and their inhibitory activities against amyloid-beta aggregation. PHYTOCHEMISTRY 2019; 160:11-18. [PMID: 30660780 DOI: 10.1016/j.phytochem.2018.12.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 12/17/2018] [Accepted: 12/22/2018] [Indexed: 05/25/2023]
Abstract
Thirty-three phenolic compounds were identified from the extract of fermented tea (Camellia sinensis L.), including three undescribed flavonoids, namely quamoreokchaside I-II and kamoreokchaside I, along with thirty known compounds. All isolates were tested to evaluate their inhibitory effects against amyloid-beta (Aβ) aggregation through thioflavin-T (ThT) fluorescence-based assay and transmission electron microscopy (TEM). Among the isolates, three tea polyphenols, including (-)-catechin gallate (CG), (-)-epicatechin gallate (ECG), and (-)-epigallocatechin gallate (EGCG), significantly decreased Aβ aggregation at a concentration of 10 μg ml-1, compared to the positive control, Aβ alone. The anti-Aβ aggregation effects of CG, ECG, and EGCG were confirmed again via TEM, which were consistent with the ThT fluorescence-based assay. Moreover, CG and ECG provided stronger protection on SH-SY5Y cells against Aβ-induced cytotoxicity than EGCG. Remarkably, CG showed more potent inhibitory activity than EGCG, the best-known anti-Aβ aggregation agent from tea products.
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Affiliation(s)
- Taewoong Rho
- College of Pharmacy and Integrated Research Institute of Pharmaceutical Sciences, The Catholic University of Korea, Bucheon, 14662, Republic of Korea
| | - Min Sik Choi
- College of Pharmacy, Dongduk Women's University, Seoul, 02748, Republic of Korea
| | - Mila Jung
- College of Pharmacy and Integrated Research Institute of Pharmaceutical Sciences, The Catholic University of Korea, Bucheon, 14662, Republic of Korea
| | - Hyun Woo Kil
- College of Pharmacy and Integrated Research Institute of Pharmaceutical Sciences, The Catholic University of Korea, Bucheon, 14662, Republic of Korea
| | - Yong Deog Hong
- Amorepacific R&D Unit, 314-1 Bora-dong, Giheung-gu, Yongin-si, Gyeonggi-do, 17074, Republic of Korea
| | - Kee Dong Yoon
- College of Pharmacy and Integrated Research Institute of Pharmaceutical Sciences, The Catholic University of Korea, Bucheon, 14662, Republic of Korea.
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87
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Kuo YC, Chen CL, Rajesh R. Optimized liposomes with transactivator of transcription peptide and anti-apoptotic drugs to target hippocampal neurons and prevent tau-hyperphosphorylated neurodegeneration. Acta Biomater 2019; 87:207-222. [PMID: 30716553 DOI: 10.1016/j.actbio.2019.01.065] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 01/20/2019] [Accepted: 01/30/2019] [Indexed: 12/20/2022]
Abstract
Liposomes (lip) carrying pharmaceuticals have shown promise in their ability to advance the therapy for neurodegenerative diseases. However, the low nerve-targeting capacity and poor penetration rate of lip through the blood-brain barrier (BBB) are major hurdles to achieving successful treatment. Herein, we developed lip incorporating cardiolipin (CL) and phosphatidic acid (PA) to promote their capability against hyperphosphorylation of tau protein, and a transactivator of transcription (TAT) peptide to permeate the BBB for delivering nerve growth factor (NGF), rosmarinic acid (RA), curcumin (CURC) and quercetin (QU). We derived an optimization method to assess a better composition of phospholipids in the lip loaded with the four medicines. Experimental results revealed that this optimized lip increased the viability of SK-N-MC cells insulted with β-amyloid peptide (Aβ) fibrils and prevented Wistar rat brain from producing hyperphosphorylated tau. CL and PA and the grafted TAT peptide on the carrier surface improved the rescue efficiency by inhibiting Aβ deposition and reducing the expressions of phosphorylated extracellular signal-regulated protein kinase 1/2 (p-ERK1/2), c-Jun N-terminal protein kinase, p38, tau at serine 202 and caspase-3. The lip also enhanced the expressions of p-ERK5 and p-cyclic adenosine monophosphate response element-binding protein. The amalgamated activity of NGF, RA, CURC and QU, and the effect of charged CL/PA on Aβ deposits supported the therapeutic efficacy of lip. The optimized TAT-NGF-RA-CURC-QU-CL/PA-lip can be a capable drug delivery system to cross the BBB and protect Alzheimer's disease brains from tau hyperphosphorylation. STATEMENTS OF SIGNIFICANCE: The therapeutic efficiency of liposomes (lip) against neurodegenerative disorder depends on their nerve-targeting capacity and ability to permeate the blood-brain barrier (BBB). Lip was developed incorporating cardiolipin (CL) and phosphatidic acid (PA) to promote their target specificity against hyperphosphorylation of tau protein, and a transactivator of transcription (TAT) peptide to permeate the BBB. We have successfully derived an optimization method using a new mathematical expression for the first time to assess a better composition of phospholipids in lip loaded with nerve growth factor (NGF), rosmarinic acid (RA), curcumin (CURC) and quercetin (QU). The optimized TAT-NGF-RA-CURC-QU-CL/PA-lip efficaciously down-regulated the expressions of phosphorylated extracellular signal-regulated protein kinase 1/2 (p-ERK1/2), c-Jun N-terminal protein kinase, p38, tau at serine 202 and caspase-3, and up-regulated the expressions of p-ERK5 and p-cyclic adenosine monophosphate response element-binding protein in Alzheimer's disease Wistar rat model.
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88
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Chen ST, Volle D, Jalil J, Wu P, Small GW. Health-Promoting Strategies for the Aging Brain. Am J Geriatr Psychiatry 2019; 27:213-236. [PMID: 30686664 DOI: 10.1016/j.jagp.2018.12.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 12/11/2018] [Accepted: 12/11/2018] [Indexed: 12/31/2022]
Abstract
As the world's population ages and people live longer, the changes in the aging brain present substantial challenges to our health and society. With greater longevity come age-related diseases, many of which have direct and indirect influences on the health of the brain. Although there is some degree of predictable decline in brain functioning with aging, meaningful cognitive decline is not inevitable and is perhaps preventable. In this review, we present the case that the course of aging-related brain disease and dysfunction can be modified. We present the evidence for conditions and risk factors that may contribute to cognitive decline and dementia and for interventions that may mitigate their impact on cognitive functioning later in life, or even prevent them and their cognitive sequelae from developing. Although much work remains to be done to meet the challenges of the aging brain, strategies to promote its health have been demonstrated and offer much promise, which can only be realized if we mount a vigorous public health effort to implement these strategies.
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Affiliation(s)
- Stephen T Chen
- Department of Psychiatry and Biobehavioral Sciences, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, Los Angeles; the University of California, Los Angeles, Longevity Center, Los Angeles; David Geffen School of Medicine, University of California, Los Angeles, Los Angeles.
| | - Dax Volle
- Department of Psychiatry and Biobehavioral Sciences, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, Los Angeles; the University of California, Los Angeles, Longevity Center, Los Angeles; David Geffen School of Medicine, University of California, Los Angeles, Los Angeles
| | - Jason Jalil
- Department of Psychiatry and Biobehavioral Sciences, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, Los Angeles; the University of California, Los Angeles, Longevity Center, Los Angeles; David Geffen School of Medicine, University of California, Los Angeles, Los Angeles
| | - Pauline Wu
- Department of Psychiatry and Biobehavioral Sciences, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, Los Angeles; the University of California, Los Angeles, Longevity Center, Los Angeles; David Geffen School of Medicine, University of California, Los Angeles, Los Angeles
| | - Gary W Small
- Department of Psychiatry and Biobehavioral Sciences, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, Los Angeles; the University of California, Los Angeles, Longevity Center, Los Angeles; David Geffen School of Medicine, University of California, Los Angeles, Los Angeles
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89
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Eslami M, Nezafat N, Negahdaripour M, Ghasemi Y. Computational approach to suggest a new multi-target-directed ligand as a potential medication for Alzheimer’s disease. J Biomol Struct Dyn 2019; 37:4825-4839. [DOI: 10.1080/07391102.2018.1564701] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Mahboobeh Eslami
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Navid Nezafat
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Manica Negahdaripour
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Younes Ghasemi
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Medical Biotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
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90
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Deng TS. Biological clocks, some clock-related diseases, and medicinal plants. Psych J 2019; 7:197-205. [PMID: 30561856 DOI: 10.1002/pchj.263] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 10/10/2018] [Accepted: 11/05/2018] [Indexed: 12/26/2022]
Abstract
Progress in chronobiology thus far has been built on botanical field investigation records, experiments on the development of biological clocks, open questions, established rules, and molecular mechanisms. In this review, three clock-related diseases, namely cancer, Alzheimer's disease (AD), and depression, are discussed. Evidence-based mechanisms of action of active compounds, namely epigallocatechin-3-gallate (EGCG), curcumin, and melatonin, from three medicinal plants, Camellia sinensis K., Curcuma longa L., and Hypericum perforatum L., respectively, as potential therapies against cancer, AD, and depression, respectively, have been explained. Feedback loops of basic inputs and application outputs of various studies will lead to the development of chronobiology for applications in time-keeping, disease prevention, and control, and future agricultural practices.
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Affiliation(s)
- Tzu-Shing Deng
- Department of Agronomy, National Chung-Hsing University, Taichung, Taiwan
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91
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Yang Y, Li S, Zhang Q, Kuang Y, Qin A, Gao M, Li F, Tang BZ. An AIE-active theranostic probe for light-up detection of Aβ aggregates and protection of neuronal cells. J Mater Chem B 2019; 7:2434-2441. [DOI: 10.1039/c9tb00121b] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
An AIE-active probe of Cur-N-BF2 is developed for light-up detection of Aβ fibrils and plaques, inhibition of Aβ fibrillation, disassembly of preformed Aβ fibrils, and protection of neuronal cells.
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Affiliation(s)
- Yaqi Yang
- Guangdong Provincial Key Laboratory of Brain Function and Disease
- Department of Neurobiology and Anatomy
- Zhongshan School of Medicine
- Sun Yat-sen University
- Guangzhou 510080
| | - Shiwu Li
- State Key Laboratory of Luminescent Materials and Devices
- Center for Aggregation-Induced Emission
- Guangzhou International Campus
- South China University of Technology
- Guangzhou
| | - Qin Zhang
- Guangdong Provincial Key Laboratory of Brain Function and Disease
- Department of Neurobiology and Anatomy
- Zhongshan School of Medicine
- Sun Yat-sen University
- Guangzhou 510080
| | - Ying Kuang
- Guangdong Provincial Key Laboratory of Brain Function and Disease
- Department of Neurobiology and Anatomy
- Zhongshan School of Medicine
- Sun Yat-sen University
- Guangzhou 510080
| | - Anjun Qin
- State Key Laboratory of Luminescent Materials and Devices
- Center for Aggregation-Induced Emission
- Guangzhou International Campus
- South China University of Technology
- Guangzhou
| | - Meng Gao
- National Engineering Research Center for Tissue Restoration and Reconstruction
- South China University of Technology
- Guangzhou
- China
| | - Feng Li
- Guangdong Provincial Key Laboratory of Brain Function and Disease
- Department of Neurobiology and Anatomy
- Zhongshan School of Medicine
- Sun Yat-sen University
- Guangzhou 510080
| | - Ben Zhong Tang
- State Key Laboratory of Luminescent Materials and Devices
- Center for Aggregation-Induced Emission
- Guangzhou International Campus
- South China University of Technology
- Guangzhou
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92
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Zhang J, Wang Q, Rao G, Qiu J, He R. Curcumin improves perfusion recovery in experimental peripheral arterial disease by upregulating microRNA-93 expression. Exp Ther Med 2019; 17:798-802. [PMID: 30651865 PMCID: PMC6307414 DOI: 10.3892/etm.2018.7000] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 11/01/2018] [Indexed: 01/29/2023] Open
Abstract
In peripheral arterial disease (PAD), angiogenesis is the major process involved in repairing the microvasculature in the ischemic lower limb. Curcumin, a monomer isolated from turmeric roots, has been demonstrated to have pro- and anti-angiogenic effects under different circumstances. Previous studies have indicated that curcumin treatment improves tissue repair and perfusion recovery in a mouse model of diabetic PAD. However, the effects of curcumin on PAD under non-diabetic conditions has remained elusive, In the present study, mice with PAD and a normal glycaemic profile were treated with curcumin, which improved perfusion recovery, increased capillary density and elevated microRNA (miR)-93 expression in ischemic muscle tissue. In cultured endothelial cells under simulated ischemia, curcumin improved endothelial cell viability and enhanced tube formation. However, following miR-93 knockdown using a microRNA inhibitor, endothelial cell tube formation was inhibited. Furthermore, in the presence of the miR-93 inhibitor, curcumin did not alter endothelial cell viability or tube formation. These results demonstrate that curcumin had beneficial effects in non-diabetic PAD by improving angiogenesis, which may have been achieved partially via the promotion of miR-93 expression.
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Affiliation(s)
- Jinfeng Zhang
- Department of Cardiology, The Central Hospital of Xiaogan, Wuhan University of Science and Technology, Xiaogan, Hubei 432000, P.R. China
- Department of Cardiology, Cardiovascular Research Institute, Wuhan University, Hubei Key Laboratory of Cardiology, Wuhan, Hubei 430060, P.R. China
| | - Qiongtao Wang
- Department of Cardiology, The Central Hospital of Xiaogan, Wuhan University of Science and Technology, Xiaogan, Hubei 432000, P.R. China
| | - Guotao Rao
- Department of Cardiology, The Central Hospital of Xiaogan, Wuhan University of Science and Technology, Xiaogan, Hubei 432000, P.R. China
| | - Junying Qiu
- Department of Cardiology, The Central Hospital of Xiaogan, Wuhan University of Science and Technology, Xiaogan, Hubei 432000, P.R. China
| | - Ronghua He
- Department of Cardiology, The Central Hospital of Xiaogan, Wuhan University of Science and Technology, Xiaogan, Hubei 432000, P.R. China
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Liu HY, Fu X, Li YF, Li XL, Ma ZY, Zhang Y, Gao QC. miR-15b-5p targeting amyloid precursor protein is involved in the anti-amyloid eflect of curcumin in swAPP695-HEK293 cells. Neural Regen Res 2019; 14:1603-1609. [PMID: 31089060 PMCID: PMC6557094 DOI: 10.4103/1673-5374.255979] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Curcumin exerts a neuroprotective effect on Alzheimer's disease; however, it is not known whether microRNAs are involved in this protective effect. This study was conducted using swAPP695-HEK293 cells as an Alzheimer's disease cell model. swAPP695-HEK293 cells were treated with 0, 0.5, 1, 2, 5, and 10 μM curcumin for 24 hours. The changes in miR-15b-5p, miR-19a-3p, miR-195-5p, miR-101-3p, miR-216b-5p, miR-16-5p and miR-185-5p expression were assessed by real-time quantitative polymerase chain reaction. The mRNA and protein levels of amyloid precursor protein, amyloid-β40 and amyloid-β42 were evaluated by quantitative real-time polymerase chain reaction, western blot assays and enzyme-linked immunosorbent assays. swAPP695-HEK293 cells were transfected with miR-15b-5p mimic, or treated with 1 μM curcumin 24 hours before miR-15b-5p inhibitor transfection. The effects of curcumin on amyloid precursor protein, amyloid-β40 and amyloid-β42 levels were evaluated by western blot assays and enzyme-linked immunosorbent assay. Luciferase assays were used to analyze the interaction between miR-15b-5p and the 3'-untranslated region of amyloid precursor protein. The results show that amyloid precursor protein and amyloid-β expression were enhanced in swAPP695-HEK293 cells compared with HEK293 parental cells. Curcumin suppressed the expression of amyloid precursor protein and amyloid-β and up-regulated the expression of miR-15b-5p in swAPP695-HEK293 cells. In addition, we found a negative association of miR-15b-5p expression with amyloid precursor protein and amyloid-β levels in the curcumin-treated cells. Luciferase assays revealed that miR-15b-5p impaired the luciferase activity of the plasmid harboring the 3'-untranslated region of amyloid precursor protein. These findings indicate that curcumin down-regulates the expression of amyloid precursor protein and amyloid-β in swAPP695-HEK293 cells, which was partially mediated by miR-15b-5p via targeting of the 3'-untranslated region of amyloid precursor protein.
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Affiliation(s)
- Hong-Ying Liu
- Department of Neurology, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong Province, China
| | - Xian Fu
- Department of Neurology, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong Province, China
| | - You-Fu Li
- Department of Neurology, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong Province, China
| | - Xian-Liang Li
- Department of Neurology, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong Province, China
| | - Zhen-Yu Ma
- Department of Neurology, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong Province, China
| | - Ying Zhang
- Department of Neurology, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong Province, China
| | - Qing-Chun Gao
- Department of Neurology, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong Province, China
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94
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Shen L, Ji HF. Bidirectional interactions between dietary curcumin and gut microbiota. Crit Rev Food Sci Nutr 2018; 59:2896-2902. [DOI: 10.1080/10408398.2018.1478388] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Liang Shen
- Institute of Biomedical Research, Shandong University of Technology, Zibo, Shandong, People’s Republic of China
- Zibo Key Laboratory of New Drug Development of Neurodegenerative Diseases, Shandong University of Technology, Zibo, Shandong, People’s Republic of China
- Shandong Provincial Research Center for Bioinformatic Engineering and Technique, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, People’s Republic of China
| | - Hong-Fang Ji
- Institute of Biomedical Research, Shandong University of Technology, Zibo, Shandong, People’s Republic of China
- Zibo Key Laboratory of New Drug Development of Neurodegenerative Diseases, Shandong University of Technology, Zibo, Shandong, People’s Republic of China
- Shandong Provincial Research Center for Bioinformatic Engineering and Technique, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, People’s Republic of China
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95
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Guo L, Normando EM, Shah PA, De Groef L, Cordeiro MF. Oculo-visual abnormalities in Parkinson's disease: Possible value as biomarkers. Mov Disord 2018; 33:1390-1406. [DOI: 10.1002/mds.27454] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 05/16/2018] [Accepted: 05/18/2018] [Indexed: 12/16/2022] Open
Affiliation(s)
- Li Guo
- Glaucoma and Retinal Degenerative Disease Research Group, Institute of Ophthalmology; University College London; London UK
| | - Eduardo M. Normando
- Glaucoma and Retinal Degenerative Disease Research Group, Institute of Ophthalmology; University College London; London UK
- Western Eye Hospital, Imperial College Healthcare National Health Service Trust; London UK
- Imperial College Ophthalmology Research Group, Department of Surgery and Cancer, Imperial College London; London UK
| | - Parth Arvind Shah
- Glaucoma and Retinal Degenerative Disease Research Group, Institute of Ophthalmology; University College London; London UK
| | - Lies De Groef
- Glaucoma and Retinal Degenerative Disease Research Group, Institute of Ophthalmology; University College London; London UK
- Neural Circuit Development and Regeneration Research Group, Department of Biology; University of Leuven; Leuven Belgium
| | - M. Francesca Cordeiro
- Glaucoma and Retinal Degenerative Disease Research Group, Institute of Ophthalmology; University College London; London UK
- Western Eye Hospital, Imperial College Healthcare National Health Service Trust; London UK
- Imperial College Ophthalmology Research Group, Department of Surgery and Cancer, Imperial College London; London UK
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96
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Abou El-ezz D, Maher A, Sallam N, El-brairy A, Kenawy S. Trans-cinnamaldehyde Modulates Hippocampal Nrf2 Factor and Inhibits Amyloid Beta Aggregation in LPS-Induced Neuroinflammation Mouse Model. Neurochem Res 2018; 43:2333-2342. [DOI: 10.1007/s11064-018-2656-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 09/06/2018] [Accepted: 10/03/2018] [Indexed: 12/29/2022]
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97
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Stone J, Mitrofanis J, Johnstone DM, Falsini B, Bisti S, Adam P, Nuevo AB, George-Weinstein M, Mason R, Eells J. Acquired Resilience: An Evolved System of Tissue Protection in Mammals. Dose Response 2018; 16:1559325818803428. [PMID: 30627064 PMCID: PMC6311597 DOI: 10.1177/1559325818803428] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 08/22/2018] [Accepted: 08/29/2018] [Indexed: 12/11/2022] Open
Abstract
This review brings together observations on the stress-induced regulation of resilience mechanisms in body tissues. It is argued that the stresses that induce tissue resilience in mammals arise from everyday sources: sunlight, food, lack of food, hypoxia and physical stresses. At low levels, these stresses induce an organised protective response in probably all tissues; and, at some higher level, cause tissue destruction. This pattern of response to stress is well known to toxicologists, who have termed it hormesis. The phenotypes of resilience are diverse and reports of stress-induced resilience are to be found in journals of neuroscience, sports medicine, cancer, healthy ageing, dementia, parkinsonism, ophthalmology and more. This diversity makes the proposing of a general concept of induced resilience a significant task, which this review attempts. We suggest that a system of stress-induced tissue resilience has evolved to enhance the survival of animals. By analogy with acquired immunity, we term this system 'acquired resilience'. Evidence is reviewed that acquired resilience, like acquired immunity, fades with age. This fading is, we suggest, a major component of ageing. Understanding of acquired resilience may, we argue, open pathways for the maintenance of good health in the later decades of human life.
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Affiliation(s)
- Jonathan Stone
- Discipline of Physiology, Bosch Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia
| | - John Mitrofanis
- Discipline of Anatomy and Histology, Bosch Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia
| | - Daniel M. Johnstone
- Discipline of Physiology, Bosch Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia
| | - Benedetto Falsini
- Facolta’ di Medicina e Chirurgia, Fondazione Policlinico A. Gemelli, Universita’ Cattolica del S. Cuore, Rome, Italy
| | - Silvia Bisti
- Department of Biotechnical and Applied Clinical Sciences, Università degli Studi dell’Aquila, IIT Istituto Italiano di Tecnologia Genova and INBB Istituto Nazionale Biosistemi e Biostrutture, Rome, Italy
| | - Paul Adam
- School of Biological, Earth and Environmental Science, University of New South Wales, Sydney, New South Wales, Australia
| | - Arturo Bravo Nuevo
- Department of Biomedical Sciences, Philadelphia College of Osteopathic Medicine, Philadelphia, PA, USA
| | - Mindy George-Weinstein
- Department of Biomedical Sciences, Philadelphia College of Osteopathic Medicine, Philadelphia, PA, USA
| | - Rebecca Mason
- Discipline of Physiology, Bosch Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia
| | - Janis Eells
- College of Health Sciences, University of Wisconsin, Milwaukee, WI, USA
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98
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Jazvinšćak Jembrek M, Slade N, Hof PR, Šimić G. The interactions of p53 with tau and Aß as potential therapeutic targets for Alzheimer’s disease. Prog Neurobiol 2018; 168:104-127. [DOI: 10.1016/j.pneurobio.2018.05.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 03/04/2018] [Accepted: 05/01/2018] [Indexed: 12/24/2022]
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99
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Hocking AJ, Elliot D, Hua J, Klebe S. Administering Fixed Oral Doses of Curcumin to Rats through Voluntary Consumption. JOURNAL OF THE AMERICAN ASSOCIATION FOR LABORATORY ANIMAL SCIENCE 2018; 57:508-512. [PMID: 30157991 DOI: 10.30802/aalas-jaalas-17-000143] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Curcumin, a polyphenol derived from turmeric, has a wide variety of therapeutic benefits including antiinflammatory, antioxidative, and chemopreventative effects. Oral gavage is widely performed to administer curcumin in laboratory rodents in several experimental models. Although effective, this method can increase stress in the animal, potentially influencing experimental results. Moreover, oral gavage can result in mortality due to accidental instillation of fluid into the lungs, serious mechanical damage, and gavage-related reflux. Here we describe a method for the administration of fixed dosages of curcumin to rats through voluntary consumption of peanut butter, to reduce gavage-related morbidity and distress to animals and to provide environmental enrichment. Fischer 344 (n = 6) rats received 1100 mg/kg of a commercial curcumin product (equivalent to approximately 200 mg/kg of curcumin) in 8 g/kg of peanut butter daily for 5 wk. Curcumin concentrations in rat plasma were measured by using UPLC-MS at 2 to 4 h after administration. All rats voluntarily consumed the peanut butter-curcumin mixture consistently over the 5-wk period. Total curcumin concentrations in plasma samples collected 2 to 4 h after curcumin consumption were 171 ± 48.4 ng/mL (mean ± 1 SD; range, 103 to 240 ng/mL). This noninvasive curcumin delivery method was effective, eliminated the stress caused by daily oral gavage, and added environmental enrichment.
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Affiliation(s)
- Ashleigh J Hocking
- Department of Anatomical Pathology, Flinders University, Flinders Medical Centre, Adelaide, South Australia;,
| | - David Elliot
- Department of Clinical Pharmacology, Flinders Medical Centre, Adelaide, South Australia
| | - Jin Hua
- Department of Anatomical Pathology, Flinders University, Flinders Medical Centre, Adelaide, South Australia
| | - Sonja Klebe
- Department of Anatomical Pathology, Flinders University, Flinders Medical Centre, Adelaide, South Australia
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100
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Abstract
Cognitive decline occurs in all persons during the aging process. Eventually, this can result in mild cognitive impairment and dementia. There are more than 100 causes of dementia. A multifocal approach to slowing cognitive decline (Mediterranean diet, exercise, computer games, socialization, and treatment of cardiovascular risk factors) appears to be effective.
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Affiliation(s)
- John E Morley
- Division of Geriatric Medicine, Saint Louis University School of Medicine, 1402 South Grand Boulevard, M238, St Louis, MO 63104, USA.
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