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Rahman MA, Shuvo AA, Apu MMH, Bhakta MR, Islam F, Rahman MA, Islam MR, Reza HM. Combination of epigallocatechin 3 gallate and curcumin improves D-galactose and normal-aging associated memory impairment in mice. Sci Rep 2023; 13:12681. [PMID: 37542120 PMCID: PMC10403524 DOI: 10.1038/s41598-023-39919-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 08/02/2023] [Indexed: 08/06/2023] Open
Abstract
Previously, we observed curcumin improves aging-associated memory impairment in D-galactose (D-gal) and normal-aged (NA) mice. Evidence showed that multiple agents can be used in managing aging-induced memory dysfunction, drawn by the contribution of several pathways. Curcumin and Epigallocatechin 3 gallate (EGCG) combination substantially reduced the oxidative stress that commonly mediates aging. This study examined the combined effect of EGCG and curcumin on memory improvement in two recognized models, D-gal and normal-aged (NA) mice. The co-administration of EGCG and curcumin significantly (p < 0.05) increased retention time detected by passive avoidance (PA) and freezing response determined in contextual fear conditioning (CFC) compared to the discrete administration of EGCG or curcumin. Biochemical studies revealed that the combination of EGCG and curcumin remarkably ameliorated the levels (p < 0.05) of glutathione, superoxide dismutase, catalase, advanced oxidation protein products, nitric oxide, and lipid peroxidation compared to the monotherapy of EGCG or curcumin in mice hippocampi. The behavioral and biochemical studies revealed that the combination of EGCG and curcumin showed better improvement in rescuing aging-associated memory disorders in mice. EGCG and curcumin combination could serve as a better choice in managing aging-related memory disorders.
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Affiliation(s)
- Md Ashrafur Rahman
- Department of Pharmaceutical Sciences, North South University, Bashundhara, Dhaka, 1229, Bangladesh.
- Department of Pharmaceutical Sciences, Wilkes University, Wilkes Barre, PA, 18766, USA.
| | - Arif Anzum Shuvo
- Department of Pharmaceutical Sciences, North South University, Bashundhara, Dhaka, 1229, Bangladesh
| | - Md Mehedi Hasan Apu
- Department of Pharmaceutical Sciences, North South University, Bashundhara, Dhaka, 1229, Bangladesh
| | - Monisha Rani Bhakta
- Department of Pharmaceutical Sciences, North South University, Bashundhara, Dhaka, 1229, Bangladesh
| | - Farzana Islam
- Department of Pharmaceutical Sciences, North South University, Bashundhara, Dhaka, 1229, Bangladesh
| | - Md Atiqur Rahman
- Department of Pharmaceutical Sciences, North South University, Bashundhara, Dhaka, 1229, Bangladesh
| | - Md Rabiul Islam
- Department of Pharmacy, University of Asia Pacific, 74/A Green Road, Farmgate, Dhaka, 1205, Bangladesh.
- School of Pharmacy, BRAC University, 66 Mohakhali, Dhaka, 1212, Bangladesh.
| | - Hasan Mahmud Reza
- Department of Pharmaceutical Sciences, North South University, Bashundhara, Dhaka, 1229, Bangladesh.
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2
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Wei R, Su Z, Mackenzie GG. Chlorogenic acid combined with epigallocatechin-3-gallate mitigates D-galactose-induced gut aging in mice. Food Funct 2023; 14:2684-2697. [PMID: 36752162 DOI: 10.1039/d2fo03306b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Chlorogenic acid (CGA) and epigallocatechin-3-gallate (EGCG) are major polyphenolic constituents of coffee and green tea with beneficial health properties. In this study, we evaluated the gut protecting effect of CGA and EGCG, alone or in combination, on D-galactose-induced aging mice. CGA plus EGCG more effectively improved the cognition deficits and protected the gut barrier function, compared with the agents alone. Specifically, CGA plus EGCG prevented the D-galactose mediated reactive oxygen species accumulation by increasing the total antioxidant capacity, reducing the levels of malondialdehyde, and suppressing the activity of the antioxidant enzymes superoxide dismutase and catalase. In addition, supplementation of CGA and EGCG suppressed gut inflammation by reducing the levels of the proinflammatory cytokines TNFα, IFNγ, IL-1β and IL-6. Moreover, CGA and EGCG modulated the gut microbiome altered by D-galactose. For instance, CGA plus EGCG restored the Firmicutes/Bacteroidetes ratio of the aging mice to control levels. Furthermore, CGA plus EGCG decreased the abundance of Lactobacillaceae, Erysipelotrichaceae, and Deferribacteraceae, while increased the abundance of Lachnospiraceae, Muribaculaceae, and Rikenellaceae, at the family level. In conclusion, CGA in combination with EGCG ameliorated the gut alterations induced by aging, in part, through antioxidant and anti-inflammatory effects, along with its gut microbiota modulatory capacity.
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Affiliation(s)
- Ran Wei
- Department of Tea Science, Zhejiang Agriculture and Forestry University, Hangzhou, 311300, China.
| | - Zhucheng Su
- Department of Tea Science, Zhejiang Agriculture and Forestry University, Hangzhou, 311300, China.
| | - Gerardo G Mackenzie
- Department of Nutrition, University of California, Davis, California, 95616, USA.
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3
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Özduran G, Becer E, Vatansever HS. The Role and Mechanisms of Action of Catechins in Neurodegenerative Diseases. JOURNAL OF THE AMERICAN NUTRITION ASSOCIATION 2023; 42:67-74. [PMID: 34817304 DOI: 10.1080/07315724.2021.1981487] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The prevalence, incidence and mortality rates of neurodegenerative diseases such as Alzheimer's disease and Parkinson's disease are gradually increasing. New approaches are being developed to manage the progression and treatment of neurodegenerative diseases. Catechins, polyphenolic compounds, are key compounds that demonstrate therapeutic effects with their properties such as antioxidant, anti-inflammatory, anti-apoptotic properties in the prevention and treatment of neurodegenerative diseases. The therapeutic effects of catechins have been exhaustively studied in human and animal models. Catechins can have anti-inflammatory effects by suppressing inflammatory pathways and cytokines, as well as antioxidant effects such as chelating metal ions and scavenging radicals. They might reduce phosphorylation of tau proteins, aggregation of amyloid-beta and apoptotic proteins release. They can also decrease alpha-synuclein accumulation and increase dopamine levels. With all these effects, they can have an effect on neurodegenerative diseases. This review points to the potential mechanisms of catechins in neurodegenerative diseases, based on their findings in the literature review.Key teaching pointsCatechins can reduce amyloid-β plaque aggregation and tau phosphorylation.Catechins can decrease alfa-synuclein levels.Catechins can protect neuronal cells with their anti-apoptotic effect.More comprehensive studies are needed to clarify this issue.
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Affiliation(s)
- Gülşen Özduran
- Faculty of Health Sciences, Department of Nutrition and Dietetics, Near East University, Nicosia, Mersin 10 Turkey
| | - Eda Becer
- DESAM Institute, Near East University, Nicosia, Mersin 10 Turkey.,Faculty of Pharmacy, Department of Biochemistry, Near East University, Nicosia, Mersin 10 Turkey
| | - Hafize Seda Vatansever
- DESAM Institute, Near East University, Nicosia, Mersin 10 Turkey.,Faculty of Medicine, Department of Histology & Embryology, Manisa Celal Bayar University, Manisa, Turkey
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4
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Abushukur Y, Knackstedt R. The Impact of Supplements on Recovery After Peripheral Nerve Injury: A Review of the Literature. Cureus 2022; 14:e25135. [PMID: 35733475 PMCID: PMC9205410 DOI: 10.7759/cureus.25135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/19/2022] [Indexed: 11/25/2022] Open
Abstract
Peripheral nerve injury (PNI) can result from trauma, surgical resection, iatrogenic injury, and/or local anesthetic toxicity. Damage to peripheral nerves may result in debilitating weakness, numbness, paresthesia, pain, and/or autonomic instability. As PNI is associated with inflammation and nerve degeneration, means to mitigate this response could result in improved outcomes. Numerous nutrients have been investigated to prevent the negative sequelae of PNI. Alpha-lipoic acid, cytidine diphosphate-choline (CDP Choline), curcumin, melatonin, vitamin B12, and vitamin E have demonstrated notable success in improving recovery following PNI within animal models. While animal studies show ample evidence that various supplements may improve recovery after PNI, similar evidence in human patients is limited. The goal of this review is to analyze supplements that have been used successfully in animal models of PNI to serve as a reference for future studies on human patients. By analyzing supplements that have shown efficacy in animal studies, healthcare providers will have a resource from which to guide decision-making regarding future human studies investigating the role that supplements could play in PNI recovery. Ultimately, establishing a comprehensive understanding of these supplements in human patients following PNI may significantly improve post-surgical outcomes, quality of life, and peripheral nerve regeneration.
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5
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Dietary and nutraceutical-based therapeutic approaches to combat the pathogenesis of Huntington’s disease. J Funct Foods 2022. [DOI: 10.1016/j.jff.2022.105047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/06/2022] Open
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6
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Ali AA, Khalil MG, Abd El-Latif DM, Okda T, Abdelaziz AI, Abu-Elfotuh K, Kamal MM, Wahid A. The influence of vinpocetine alone or in combination with Epigallocatechin-3-gallate, Coenzyme COQ10, Vitamin E and Selenium as a potential neuroprotective combination against aluminium-induced Alzheimer's disease in Wistar Albino Rats. Arch Gerontol Geriatr 2021; 98:104557. [PMID: 34706318 DOI: 10.1016/j.archger.2021.104557] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 10/09/2021] [Accepted: 10/10/2021] [Indexed: 12/31/2022]
Abstract
Alzheimer's disease (AD) is one of such diseases that represent the most prominent cause of dementia in elderly people. To explore the possible neuroprotective effect as well as mechanism of action of Vinpocetine either alone or in combination with EGCG, CoQ10, or VE & Se in ameliorating aluminum chloride-induced AD in rats. Rats were received AlCl3 (70 mg/kg) intraperitoneal daily dose for 30 days along with EGCG (10 mg/kg, I.P), CoQ10 (200 mg/kg, P.O), VE (100 mg/kg, P.O) & Se (1 mg/kg, P.O) as well as Vinpocetine (20 mg/kg, P.O) either alone or in combination. Results revealed that the combination of Vinpocetine with EGCG showed the best neuroprotection. This protection in the brain was indicated by the significant decrease in Aβ and ACHE. The same pattern of results were shown in the levels of monoamines and BDNF. In addition, the combination of Vinpocetine with EGCG showed more pronounced anti-inflammatory (TNF-α, IL-1β) and antioxidant (MDA, SOD, TAC) effects in comparison to other combinations. These results were confirmed using histopathological examinations as well as DNA fragmentation assays. Vinpocetine with EGCG showed pronounced protection on neurons against AD induced by AlCl3 in rats.
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Affiliation(s)
- Azza A Ali
- Department of Pharmacology and Toxicology; Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt
| | - Mona G Khalil
- Department of Biochemistry, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt
| | - Doaa M Abd El-Latif
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Modern University for Technology and Information, Cairo, Egypt
| | - Tarek Okda
- Department of Biochemistry, Faculty of pharmacy, Damanhour University, Egypt
| | - Aya I Abdelaziz
- Medical Research Center, Faculty of pharmacy, Heliopolis University, Egypt
| | - Karema Abu-Elfotuh
- Department of Pharmacology and Toxicology; Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt
| | - Mona M Kamal
- Department of Pharmacology and Toxicology; Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt
| | - Ahmed Wahid
- Department of Pharmaceutical Biochemistry, Faculty of pharmacy, Alexandria University, Egypt.
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7
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Cacao powder supplementation attenuates oxidative stress, cholinergic impairment, and apoptosis in D-galactose-induced aging rat brain. Sci Rep 2021; 11:17914. [PMID: 34504131 PMCID: PMC8429651 DOI: 10.1038/s41598-021-96800-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 08/11/2021] [Indexed: 12/31/2022] Open
Abstract
Aging, a critical risk factor of several diseases, including neurodegenerative disorders, affects an ever-growing number of people. Cacao supplementation has been suggested to improve age-related neuronal deficits. Therefore, this study investigated the protective effects of raw cacao powder on oxidative stress-induced aging. Male Sprague-Dawley rats were divided into 4 groups: Control (C), D-galactose-induced aging (G), D-galactose injection with 10% (LC), and 16% (HC) cacao powder mixed diet. D-galactose (300 mg/3 mL/kg) was intraperitoneally injected into all but the control group for 12 weeks. Cacao supplemented diets were provided for 8 weeks. The levels of serum Malondialdehyde (MDA), Advanced Glycation End-products (AGEs), brain and liver MDA, the indicators of the D-galactose induced oxidative stress were significantly decreased in LC and HC but increased in G. The Acetylcholinesterase (AChE) activity of brain showed that the cholinergic impairment was significantly lower in LC, and HC than G. Furthermore, the expression levels of catalase (CAT), phospho-Akt/Akt, and procaspase-3 were significantly increased in LC and HC. In conclusion, cacao consumption attenuated the effects of oxidative stress, cholinergic impairment and apoptosis, indicating its potential in future clinical studies.
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8
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Hsieh MH, Cui ZY, Yang AL, Nhu NT, Ting SY, Yu SH, Cheng YJ, Lin YY, Wu XB, Lee SD. Cerebral Cortex Apoptosis in Early Aged Hypertension: Effects of Epigallocatechin-3-Gallate. Front Aging Neurosci 2021; 13:705304. [PMID: 34456710 PMCID: PMC8397540 DOI: 10.3389/fnagi.2021.705304] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 07/23/2021] [Indexed: 11/13/2022] Open
Abstract
This study aimed to investigate cerebral cortex apoptosis on the early aged hypertension and the effects of green tea flavonoid epigallocatechin-3-gallate (EGCG). Twenty-four rats were divided into three groups: a control Wistar-Kyoto group (WKY, n = 8), a spontaneously early aged hypertensive group (SHR, n = 8), and an early aged hypertension with EGCG treatment group (SHR-EGCG, n = 8; daily oral EGCG 200 mg/kg-94%, 12 weeks). At 48 weeks old, blood pressures (BPs) were evaluated and cerebral cortexes were isolated for TUNEL assay and Western blotting. Systolic, diastolic, and mean blood pressure levels in the SHR-EGCG were reduced compared to the SHR. The percentage of neural cell deaths, the levels of cytosolic Endonuclease G, cytosolic AIF (Caspase-independent apoptotic pathway), Fas, Fas Ligand, FADD, Caspase-8 (Fas-mediated apoptotic pathway), t-Bid, Bax/Bcl-2, Bak/Bcl-xL, cytosolic Cytochrome C, Apaf-1, Caspase-9 (Mitochondrial-mediated apoptotic pathway), and Caspase-3 (Fas-mediated and Mitochondria-mediated apoptotic pathways) were increased in the SHR relative to WKY and reduced in SHR-EGCG relative to SHR. In contrast, the levels of Bcl-2, Bcl-xL, p-Bad, 14-3-3, Bcl-2/Bax, Bcl-xL/Bak, and p-Bad/Bad (Bcl-2 family-related pro-survival pathway), as well as Sirt1, p-PI3K/PI3K and p-AKT/AKT (Sirt1/PI3K/AKT-related pro-survival pathway), were reduced in SHR relative WKY and enhanced in SHR-EGCG relative to SHR. In conclusion, green tea flavonoid epigallocatechin-3-gallate (EGCG) might prevent neural apoptotic pathways and activate neural survival pathways, providing therapeutic effects on early aged hypertension-induced neural apoptosis.
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Affiliation(s)
- Min-Huang Hsieh
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Jen-Ai Hospital, Taichung, Taiwan
| | - Zhen-Yang Cui
- School of Rehabilitation Medicine, Weifang Medical University, Shandong, China
| | - Ai-Lun Yang
- Institute of Sports Sciences, University of Taipei, Taipei, Taiwan
| | - Nguyen Thanh Nhu
- Faculty of Medicine, Can Tho University of Medicine and Pharmacy, Can Tho, Vietnam.,Department of Physical Therapy, Graduate Institute of Rehabilitation Science, China Medical University, Taichung, Taiwan
| | - Shih-Ying Ting
- Department of Internal Medicine, Jen-Ai Hospital, Taichung, Taiwan
| | - Shao-Hong Yu
- College of Rehabilitation, Shandong University of Traditional Chinese Medicine, Shandong, China
| | - Yu-Jung Cheng
- Department of Physical Therapy, Graduate Institute of Rehabilitation Science, China Medical University, Taichung, Taiwan
| | - Yi-Yuan Lin
- Department of Exercise and Health Science, National Taipei University of Nursing and Health Sciences, Taipei, Taiwan
| | - Xu-Bo Wu
- Department of Rehabilitation, Seventh People's Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China.,School of Rehabilitation Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Shin-Da Lee
- School of Rehabilitation Medicine, Weifang Medical University, Shandong, China.,Department of Physical Therapy, Graduate Institute of Rehabilitation Science, China Medical University, Taichung, Taiwan.,College of Rehabilitation, Shandong University of Traditional Chinese Medicine, Shandong, China.,Department of Rehabilitation, Seventh People's Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Department of Physical Therapy, Asia University, Taichung, Taiwan
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9
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Li L, Li Y, Luo J, Jiang Y, Zhao Z, Chen Y, Huang Q, Zhang L, Wu T, Pang J. Resveratrol, a novel inhibitor of GLUT9, ameliorates liver and kidney injuries in a D-galactose-induced ageing mouse model via the regulation of uric acid metabolism. Food Funct 2021; 12:8274-8287. [PMID: 34180933 DOI: 10.1039/d1fo00538c] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Accumulating evidence has shown that chronic injection of d-galactose (d-gal) can mimic natural ageing and induce liver and kidney injury. Previous studies showed that d-gal increased uric acid (UA) levels in mice. The increase in UA levels caused inflammation, accelerated oxidative stress, and aggravated liver and kidney injury. Oxidative stress and inflammation play vital roles in the ageing process. Therefore, reducing the levels of UA in ageing mice improved liver and kidney injury. Glucose transporter 9 (GLUT9) is responsible for the reabsorption of UA in the body, and its inhibition helps downregulate UA levels. The present study investigated the UA-lowering activity of the GLUT9 inhibitor resveratrol (RSV) using the patch clamping technique established in our laboratory in vitro. This research is the first study to demonstrate that RSV effectively inhibits UA uptake via GLUT9 (IC50 = 68.77 μM) in vitro. An in vivo study was also performed to investigate the possible protective effect of RSV on d-gal-induced liver and kidney injury. RSV significantly reduced serum UA levels via the downregulation of GLUT9 mRNA and protein expression and promoted the excretion of excess UA through urine. Biochemical analysis showed that RSV significantly downregulated abnormal increases in serum levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST), blood urea nitrogen (BUN) and creatinine (CRE) caused by long-term d-gal treatment, which effectively improved pathological damage, increased superoxide dismutase (SOD) activity and decreased the content of malondialdehyde (MDA) in the liver and kidneys. RSV also downregulated the expression of the inflammatory cytokines, interleukin IL-6, IL-1β and tumor necrosis factor (TNF)-α in the liver and kidneys of ageing mice. Our findings provide new insights into the treatment strategies for ageing-induced liver and kidney injury and reveal a new mechanism of RSV-induced reduction in UA levels in ageing individuals.
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Affiliation(s)
- Lu Li
- Guangdong Provincial Key Laboratory of Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China.
| | - Yongmei Li
- Guangdong Provincial Key Laboratory of Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China.
| | - Jian Luo
- Guangdong Provincial Key Laboratory of Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China.
| | - Yanqing Jiang
- Guangdong Provincial Key Laboratory of Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China.
| | - Zean Zhao
- Guangdong Provincial Key Laboratory of Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China.
| | - Yanyu Chen
- Guangdong Provincial Key Laboratory of Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China.
| | - Qinghua Huang
- Guangdong Provincial Key Laboratory of Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China.
| | - Leqi Zhang
- Guangdong Provincial Key Laboratory of Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China.
| | - Ting Wu
- Guangdong Provincial Key Laboratory of Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China.
| | - Jianxin Pang
- Guangdong Provincial Key Laboratory of Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China.
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Gonçalves PB, Sodero ACR, Cordeiro Y. Green Tea Epigallocatechin-3-gallate (EGCG) Targeting Protein Misfolding in Drug Discovery for Neurodegenerative Diseases. Biomolecules 2021; 11:767. [PMID: 34065606 PMCID: PMC8160836 DOI: 10.3390/biom11050767] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/14/2021] [Accepted: 05/16/2021] [Indexed: 12/15/2022] Open
Abstract
The potential to treat neurodegenerative diseases (NDs) of the major bioactive compound of green tea, epigallocatechin-3-gallate (EGCG), is well documented. Numerous findings now suggest that EGCG targets protein misfolding and aggregation, a common cause and pathological mechanism in many NDs. Several studies have shown that EGCG interacts with misfolded proteins such as amyloid beta-peptide (Aβ), linked to Alzheimer's disease (AD), and α-synuclein, linked to Parkinson's disease (PD). To date, NDs constitute a serious public health problem, causing a financial burden for health care systems worldwide. Although current treatments provide symptomatic relief, they do not stop or even slow the progression of these devastating disorders. Therefore, there is an urgent need to develop effective drugs for these incurable ailments. It is expected that targeting protein misfolding can serve as a therapeutic strategy for many NDs since protein misfolding is a common cause of neurodegeneration. In this context, EGCG may offer great potential opportunities in drug discovery for NDs. Therefore, this review critically discusses the role of EGCG in NDs drug discovery and provides updated information on the scientific evidence that EGCG can potentially be used to treat many of these fatal brain disorders.
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Affiliation(s)
| | | | - Yraima Cordeiro
- Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro 21949-900, Brazil; (P.B.G.); (A.C.R.S.)
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11
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Jin X, Guo JL, Wang L, Zhong X, Yao WF, Gao H, Liu MY. Natural products as pharmacological modulators of mitochondrial dysfunctions for the treatments of Alzheimer's disease: A comprehensive review. Eur J Med Chem 2021; 218:113401. [PMID: 33831779 DOI: 10.1016/j.ejmech.2021.113401] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 03/19/2021] [Accepted: 03/20/2021] [Indexed: 10/21/2022]
Abstract
Alzheimer's disease (AD) is the most common progressive neurodegenerative disorder characterized by neuronal loss and cognitive impairment that harshly affect the elderly individuals. Currently, the available anti-AD pharmacological approaches are purely symptomatic to alleviate AD symptoms, and the curative effects of novel anti-AD drugs focused on Aβ target are disappointing. Hence, there is a tremendous need to adjust AD therapeutic targets and discover novel anti-AD agents. In AD, mitochondrial dysfunction gradually triggers neuronal death from different aspects and worsens the occurrence and progress of AD. Consequently, it has been proposed that the intervention of impaired mitochondria represents an attractive breakthrough point for AD treatments. Due to chemical diversity, poly-pharmacological activities, few adverse effects and multiple targeting, natural products (NPs) have been identified as a valuable treasure for drug discovery and development. Multiple lines of studies have scientifically proven that NPs display ameliorative benefits in AD treatment in relation to mitochondrial dysfunction. This review surveys the complicated implications for mitochondrial dysregulation and AD, and then summarizes the potentials of NPs and their underlying molecular mechanisms against AD via reducing or improving mitochondrial dysfunction. It is expected that this work may open the window to speed up the development of innovative anti-AD drugs originated from NPs and improve upcoming AD therapeutics.
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Affiliation(s)
- Xin Jin
- Department of Pharmacognosy, School of Pharmacy, China Medical University, Shenyang, China
| | - Jia-Ling Guo
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
| | - Lin Wang
- Department of Pharmacy, School of Pharmacy, China Medical University, Shenyang, China
| | - Xin Zhong
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
| | - Wei-Fan Yao
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
| | - Hua Gao
- Division of Pharmacology Laboratory, National Institutes for Food and Drug Control, Beijing, China
| | - Ming-Yan Liu
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China.
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12
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Potential of Caffeine in Alzheimer's Disease-A Review of Experimental Studies. Nutrients 2021; 13:nu13020537. [PMID: 33562156 PMCID: PMC7915779 DOI: 10.3390/nu13020537] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/29/2021] [Accepted: 02/02/2021] [Indexed: 02/08/2023] Open
Abstract
Alzheimer's disease (AD) is the most common type of dementia leading to progressive memory loss and cognitive impairment. Considering that pharmacological treatment options for AD are few and not satisfactory, increasing attention is being paid to dietary components that may affect the development of the disease. Such a dietary component may be caffeine contained in coffee, tea or energy drinks. Although epidemiological data suggest that caffeine intake may counteract the development of cognitive impairment, results of those studies are not conclusive. The aim of the present study is to review the existing experimental studies on the efficacy of caffeine against AD and AD-related cognitive impairment, focusing on the proposed protective mechanisms of action. In conclusion, the reports of studies on experimental AD models generally supported the notion that caffeine may exert some beneficial effects in AD. However, further studies are necessary to elucidate the role of caffeine in the effects of its sources on cognition and possibly AD risk.
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13
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Parasuraman S, Qin BNY, Hui LC, Beng JYK. Effect of epigallocatechin gallate on aluminum chloride-induced changes in behavior, biochemical parameters, and spermatogenesis of Sprague-Dawley rats. BENI-SUEF UNIVERSITY JOURNAL OF BASIC AND APPLIED SCIENCES 2020. [DOI: 10.1186/s43088-020-00079-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Epigallocatechin gallate (EGCG) acts as an antioxidant by preventing oxidative stress. The effect of EGCG on aluminum-induced testicular injury is not clear. Hence, the present study is planned to investigate the effect of EGCG on aluminum chloride (AlCl3)-induced changes in behavior, biochemical parameters, and spermatogenesis in male Sprague-Dawley rats. The rats were divided into six groups with six animals each. All the animals were administered with respective assigned treatment once daily for 28 days. The animals in groups I to VI were administered with drug vehicle, AlCl3, vitamin C, EGCG, vitamin C, and EGCG, respectively. The animals in groups V and VI were additionally challenged with AlCl3 (10 mg/kg) immediately after vitamin C and EGCG administration, respectively. Changes in behavior were measured on day 1, 14 and 28. At the end of the study, the blood sample was collected from all the animals, and the serum was separated and used for biochemical analysis. Later, the rats were subjected to bilateral orchiectomy; sperm was collected from the cauda epididymis for microscopic examination. Then, the animals were sacrificed, and the organs such as the brain, lungs, heart, liver, kidney, spleen, and testis were collected for organ weight analysis.
Results
The animal administered with AlCl3 showed a reduction in locomotor activity, grip strength, and escape latency time whereas vitamin C prevented the effect of AlCl3. But, EGCG did not show any significant changes in AlCl3-induced behavioral and biochemical changes. At the end of the study, vitamin C prevented AlCl3-induced behavioral and biochemical changes. The group of animals administered with AlCl3 showed a reduction in the number of spermatozoa whereas AlCl3 + vitamin C and AlCl3 + EGCG did not show any significant changes in the number of spermatozoa when compared to the control group.
Conclusion
EGCG prevented AlCl3-induced reduction in epididymal sperm count of male rats and did not show any significant effect on AlCl3-induced changes in behavior and biochemical parameters, whereas vitamin C had an ameliorative effect on AlCl3-induced changes in behavior, biochemical parameter, and spermatogenesis.
Graphical abstract
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14
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Wang Y, Cui X, Lin Q, Cai J, Tang L, Liang Y. Active Peptide KF-8 from Rice Bran Attenuates Oxidative Stress in a Mouse Model of Aging Induced by d-Galactose. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:12271-12283. [PMID: 32942847 DOI: 10.1021/acs.jafc.0c04358] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
This study investigated the effects of a physiologically active peptide derived from rice bran (KF-8) on oxidative stress in d-galactose (d-gal)-induced aging mice and the underlying molecular mechanisms. The aging model was developed by subcutaneously injecting Institute of Cancer Research mice with 250 mg/kg d-gal daily for 12 weeks and simultaneously treating them with 30 mg/kg KF-8. The relative expression levels of Nrf2 and NF-κB in the liver were determined by the western blot. The regulation of Nrf2 and NF-κBp65 by KF-8 was further validated in NIH/3T3 cells. Compared with the control mice, the aging mice had significantly decreased body weights as well as superoxide dismutase and GSH-Px levels (p < 0.05); however, they had increased serum reactive oxygen species and malondialdehyde and 8-hydroxydeoxyguanosine levels accompanied by aortic and brain injuries. They also had elevated RAGE, TLR4, IκB, Bax, and caspase-8 expressions and NF-κB/p65 phosphorylation but reduced BcL-2 expression in the liver. Moreover, in vitro experiments demonstrated that the pretreatment of H2O2-treated NIH/3T3 cells with KF-8 significantly mitigated the NF-κB signaling and attenuated the Nrf2 nuclear transport (both p < 0.05). In conclusion, KF-8 treatment inhibited aging-induced oxidative stress-related organ injury in mice by attenuating NF-κB/p38 signaling and preserving Nrf2 activity.
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Affiliation(s)
- Yuqian Wang
- Molecular Nutrition Branch, National Engineering Laboratory for Rice and By-product Deep Processing, College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, Hunan, China
| | - Xiaoji Cui
- Molecular Nutrition Branch, National Engineering Laboratory for Rice and By-product Deep Processing, College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, Hunan, China
| | - Qinlu Lin
- Molecular Nutrition Branch, National Engineering Laboratory for Rice and By-product Deep Processing, College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, Hunan, China
| | - Jie Cai
- Molecular Nutrition Branch, National Engineering Laboratory for Rice and By-product Deep Processing, College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, Hunan, China
| | - Liuhuan Tang
- Molecular Nutrition Branch, National Engineering Laboratory for Rice and By-product Deep Processing, College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, Hunan, China
| | - Ying Liang
- Molecular Nutrition Branch, National Engineering Laboratory for Rice and By-product Deep Processing, College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, Hunan, China
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Habieb ME, Mohamed MA, El Gamal DM, Hawas AM, Mohamed TM. Anti-aging effect of DL-β-hydroxybutyrate against hepatic cellular senescence induced by D-galactose or γ-irradiation via autophagic flux stimulation in male rats. Arch Gerontol Geriatr 2020; 92:104288. [PMID: 33147533 DOI: 10.1016/j.archger.2020.104288] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 09/30/2020] [Accepted: 10/19/2020] [Indexed: 12/16/2022]
Abstract
The present study aims to shed new light on anti-aging effect of DL-β-hydroxybutyrate (βOHB) against hepatic cellular senescence induced by d-galactose or γ-irradiation. The rats divided into 6 groups. Group 1, control, group 2, exposed to γ-ray (5 GY), group 3, injected by d-galactose (150 mg/kg) daily for consecutive 6 weeks, which regarded to induce the aging, group 4, injected intraperitoneal by β-hydroxybutyrate (βOHB) (72.8 mg/kg) daily for consecutive 14 days, group 5, exposed to γ-ray then treated with βOHB daily for consecutive 14 days, group 6, injected daily with d-galactose for consecutive 6 weeks, then treated with βOHB daily at the last two weeks of d-galactose. Aspartate amino transferase (AST), alanine amino transferase (ALT), Insulin, interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) were estimated in serum. Moreover, protein expression of Microtubule-associated proteins 1A/1B light chain 3B (LC3-II/LC3-I) ratio, mechanistic target of rapamycin (mTOR), pAMPK, mRNA gene expression of 5' AMP-activated protein kinase (AMPK), Nucleoporin p62 (p62), cyclin-dependent kinase inhibitor 1(P21CIP1), cyclin-dependent kinase inhibitor 2A (p16INK4a) and DNA fragmentation percentage were measured in liver tissue as a biomarker of cellular senescence. The results confirmed that βOHB modulated serum level of AST, ALT, insulin, IL-6 and TNF-α, protein expression of mTOR and LC3-II/LC3-I ratio, pAMPK and p62 in liver aging model induced by d-galactose or γ-irradiation. Histopathological examination results of liver tissue indicated coincidence with those recorded by molecular biochemical inspection. Taken together, these findings suggest that βOHB may be useful in combating hepatic cellular senescence induced by d-galactose or γ-irradiation via autophagy dependent mechanisms.
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Affiliation(s)
- M E Habieb
- Drug Radiation Research Dept., National Centre for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority, P.O. Box, 29 Nasr City, Cairo, Egypt.
| | - M A Mohamed
- Drug Radiation Research Dept., National Centre for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority, P.O. Box, 29 Nasr City, Cairo, Egypt
| | - D M El Gamal
- Biochemistry Division, Chemistry Dept., Faculty of Science, Tanta University, Egypt
| | - A M Hawas
- Drug Radiation Research Dept., National Centre for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority, P.O. Box, 29 Nasr City, Cairo, Egypt
| | - T M Mohamed
- Biochemistry Division, Chemistry Dept., Faculty of Science, Tanta University, Egypt
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Increased BBB permeability contributes to EGCG-caused cognitive function improvement in natural aging rats: pharmacokinetic and distribution analyses. Acta Pharmacol Sin 2019; 40:1490-1500. [PMID: 31092885 DOI: 10.1038/s41401-019-0243-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 04/25/2019] [Indexed: 12/18/2022] Open
Abstract
Previous studies report that (-)-epigallocatechin-3-gallate (EGCG), the most abundant polyphenolic ingredient in green tea, has high efficacy against Alzheimer's disease (AD) in various in vivo and in vitro models. However, as a water-soluble component, how EGCG exerts its anti-AD effects in the brain was not elucidated. In the present study, we investigated the anti-AD mechanisms of EGCG in natural aging rats with cognitive impairments (CIs) assessed using Morris water maze. The rats were treated with EGCG (100 mg/kg per day, intragastrically) for 4 weeks. The expression of β-amyloid (Aβ1-42) in the brain was detected with immunohistochemical staining. We showed that EGCG administration significantly ameliorated the CI in the aging rats with CI and decreased Aβ1-42 plaque formation in their brains. Then we used an efficient ultra-performance liquid chromatography-tandem mass spectrometer method to evaluate EGCG concentrations in rat plasma and tissue distribution. We found that EGCG absorption was significantly increased in the aging with CI group compared with control young rats. After oral administration of EGCG (100 mg), EGCG could not be detected in the brain tissues of control young rats, but it was found in the brain tissue of aging rats with CI. By using Evans Blue assay, transmission electron microscopy, and Western blotting assay, we demonstrated that the permeability of blood-brain barrier (BBB) was significantly increased in aging rats with CI. These results suggest that the permeability change of BBB is the physiological structural basis for EGCG treatment to improve learning and memory, thus providing a solid evidence for EGCG druggability in anti-AD therapeutic field.
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Baeta-Corral R, Castro-Fuentes R, Giménez-Llort L. Sexual Dimorphism in the Behavioral Responses and the Immunoendocrine Status in d-Galactose-Induced Aging. J Gerontol A Biol Sci Med Sci 2019; 73:1147-1157. [PMID: 29471511 PMCID: PMC6093367 DOI: 10.1093/gerona/gly031] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Accepted: 02/16/2018] [Indexed: 01/05/2023] Open
Abstract
For almost 20 years, chronic systemic d-galactose, a monosaccharide abundantly present in milk products, fruits, and vegetables, has been used as a tool to achieve models of accelerated aging. Its neurotoxicity, induced by abnormal accumulation of reactive oxygen species and advanced glycation end products, has been widely reported. However, behavioral outcomes are still controversial and little is known about sex-dependent vulnerability. We performed a comprehensive behavioral and multifunctional screening of the chronic effects of low (50 mg/kg) and high (100 mg/kg) doses of d-galactose in 6-month-old male and female gold-standard C57BL/6 mice. Twelve classical tests with convergent validity analyzed sensorimotor, emotional and cognitive domains, indicating the existence of thresholds of response. Distinct vulnerability patterns were found in a selective sex- and dose-dependent manner. In males, d-galactose induced sensorimotor impairment and immunoendocrine senescence, but the low dose resulted in improved learning and memory. Oppositely, d-galactose-treated females exhibited a dose-dependent worse motor and spatial learning, but improved memory. Behavioral outcome items point at distinct neuronal substrates underlying the functional capacity of d-galactose-treated animals to meet task-dependent performance demands. They support that males and females can be regarded as two exceptional natural scenarios to study the functional interplay in the cross talk of homeostatic networks in aging.
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Affiliation(s)
- Raquel Baeta-Corral
- Translational Behavioral Neuroscience Group, Institute of Neuroscience, Barcelona, Spain.,Department of Psychiatry and Forensic Medicine, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Rafael Castro-Fuentes
- Department of Basic Medical Sciences, School of Health Sciences, Section Medicine, University of La Laguna, Tenerife, Spain
| | - Lydia Giménez-Llort
- Translational Behavioral Neuroscience Group, Institute of Neuroscience, Barcelona, Spain.,Department of Psychiatry and Forensic Medicine, Universitat Autònoma de Barcelona, Barcelona, Spain
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Muhammad T, Ikram M, Ullah R, Rehman SU, Kim MO. Hesperetin, a Citrus Flavonoid, Attenuates LPS-Induced Neuroinflammation, Apoptosis and Memory Impairments by Modulating TLR4/NF-κB Signaling. Nutrients 2019; 11:nu11030648. [PMID: 30884890 PMCID: PMC6471991 DOI: 10.3390/nu11030648] [Citation(s) in RCA: 271] [Impact Index Per Article: 54.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 03/09/2019] [Accepted: 03/13/2019] [Indexed: 12/14/2022] Open
Abstract
Glial activation and neuroinflammation play significant roles in apoptosis as well as in the development of cognitive and memory deficits. Neuroinflammation is also a critical feature in the pathogenesis of neurodegenerative disorders such as Alzheimer and Parkinson’s diseases. Previously, hesperetin has been shown to be an effective antioxidant and anti-inflammatory agent. In the present study, in vivo and in vitro analyses were performed to evaluate the neuroprotective effects of hesperetin in lipopolysaccharide (LPS)-induced neuroinflammation, oxidative stress, neuronal apoptosis and memory impairments. Based on our findings, LPS treatment resulted in microglial activation and astrocytosis and elevated the expression of inflammatory mediators such as phosphorylated-Nuclear factor-κB (p-NF-κB), tumor necrosis factor-α (TNF-α), and interleukin-1β (IL-1β) in the cortical and hippocampal regions and in BV2 cells. However, hesperetin cotreatment markedly reduced the expression of inflammatory cytokines by ameliorating Toll-like receptor-4 (TLR4)-mediated ionized calcium-binding adapter molecule 1/glial fibrillary acidic protein (Iba-1/GFAP) expression. Similarly, hesperetin attenuated LPS-induced generation of reactive oxygen species/lipid per oxidation (ROS/LPO) and improved the antioxidant protein level such as nuclear factor erythroid 2-related factor 2 (Nrf2) and Haem-oxygenase (HO-1) in the mouse brain. Additionally, hesperetin ameliorated cytotoxicity and ROS/LPO induced by LPS in HT-22 cells. Moreover, hesperetin rescued LPS-induced neuronal apoptosis by reducing the expression of phosphorylated-c-Jun N-terminal kinases (p-JNK), B-cell lymphoma 2 (Bcl-2)-associated X protein (Bax), and Caspase-3 protein and promoting the Bcl-2 protein level. Furthermore, hesperetin enhanced synaptic integrity, cognition, and memory processes by enhancing the phosphorylated-cAMP response element binding protein (p-CREB), postsynaptic density protein-95 (PSD-95), and Syntaxin. Overall, our preclinical study suggests that hesperetin conferred neuroprotection by regulating the TLR4/NF-κB signaling pathway against the detrimental effects of LPS.
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Affiliation(s)
- Tahir Muhammad
- Division of Applied Life Science (BK 21), College of Natural Sciences, Gyeongsang National University, Jinju 52828, Korea.
| | - Muhammad Ikram
- Division of Applied Life Science (BK 21), College of Natural Sciences, Gyeongsang National University, Jinju 52828, Korea.
| | - Rahat Ullah
- Division of Applied Life Science (BK 21), College of Natural Sciences, Gyeongsang National University, Jinju 52828, Korea.
| | - Shafiq Ur Rehman
- Division of Applied Life Science (BK 21), College of Natural Sciences, Gyeongsang National University, Jinju 52828, Korea.
| | - Myeong Ok Kim
- Division of Applied Life Science (BK 21), College of Natural Sciences, Gyeongsang National University, Jinju 52828, Korea.
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19
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Sarni AR, Baroni L. Milk and Parkinson disease: Could galactose be the missing link. MEDITERRANEAN JOURNAL OF NUTRITION AND METABOLISM 2019. [DOI: 10.3233/mnm-180234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
| | - Luciana Baroni
- Primary Care Unit, Northern District, Local Health Unit 2 Marca Trevigiana, Treviso, Italy
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20
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Martel J, Ojcius DM, Ko YF, Chang CJ, Young JD. Antiaging effects of bioactive molecules isolated from plants and fungi. Med Res Rev 2019; 39:1515-1552. [PMID: 30648267 DOI: 10.1002/med.21559] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 12/06/2018] [Accepted: 12/08/2018] [Indexed: 12/14/2022]
Affiliation(s)
- Jan Martel
- Center for Molecular and Clinical Immunology, Chang Gung University; Taoyuan Taiwan Republic of China
- Chang Gung Immunology Consortium, Linkou Chang Gung Memorial Hospital; Taoyuan Taiwan, Republic of China
| | - David M. Ojcius
- Center for Molecular and Clinical Immunology, Chang Gung University; Taoyuan Taiwan Republic of China
- Chang Gung Immunology Consortium, Linkou Chang Gung Memorial Hospital; Taoyuan Taiwan, Republic of China
- Department of Biomedical Sciences; University of the Pacific, Arthur Dugoni School of Dentistry; San Francisco California
| | - Yun-Fei Ko
- Chang Gung Immunology Consortium, Linkou Chang Gung Memorial Hospital; Taoyuan Taiwan, Republic of China
- Chang Gung Biotechnology Corporation; Taipei Taiwan Republic of China
- Biochemical Engineering Research Center, Ming Chi University of Technology; New Taipei City Taiwan Republic of China
| | - Chih-Jung Chang
- Center for Molecular and Clinical Immunology, Chang Gung University; Taoyuan Taiwan Republic of China
- Chang Gung Immunology Consortium, Linkou Chang Gung Memorial Hospital; Taoyuan Taiwan, Republic of China
- Department of Medical Biotechnology and Laboratory Science; College of Medicine, Chang Gung University; Taoyuan Taiwan Republic of China
- Research Center of Bacterial Pathogenesis, Chang Gung University; Taoyuan Taiwan Republic of China
- Department of Microbiology and Immunology; College of Medicine, Chang Gung University; Taoyuan Taiwan Republic of China
| | - John D. Young
- Center for Molecular and Clinical Immunology, Chang Gung University; Taoyuan Taiwan Republic of China
- Chang Gung Immunology Consortium, Linkou Chang Gung Memorial Hospital; Taoyuan Taiwan, Republic of China
- Chang Gung Biotechnology Corporation; Taipei Taiwan Republic of China
- Biochemical Engineering Research Center, Ming Chi University of Technology; New Taipei City Taiwan Republic of China
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21
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Anti-oxidation and anti-aging activity of polysaccharide from Malus micromalus Makino fruit wine. Int J Biol Macromol 2019; 121:1203-1212. [DOI: 10.1016/j.ijbiomac.2018.10.096] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 09/27/2018] [Accepted: 10/14/2018] [Indexed: 12/24/2022]
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Chu KO, Chan KP, Chan SO, Ng TK, Jhanji V, Wang CC, Pang CP. Metabolomics of Green-Tea Catechins on Vascular-Endothelial-Growth-Factor-Stimulated Human-Endothelial-Cell Survival. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:12866-12875. [PMID: 30406651 DOI: 10.1021/acs.jafc.8b05998] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Neovascularization causes serious oculopathy related to upregulation of vascular-endothelial-growth factor (VEGF) causing new capillary growth via endothelial cells. Green-tea-extract (GTE) constituents possess antiangiogenesis properties. We used VEGF to induce human umbilical-vein endothelial cells (HUVECs) and applied GTE, epigallocatechin gallate (EGCG), and mixtures of different compositions of purified catechins (M1 and M2) to evaluate their efficacies of inhibition and their underlying mechanisms using cell-cycle analysis and untargeted metabolomics techniques. GTE, EGCG, M1, and M2 induced HUVEC apoptosis by 22.1 ± 2, 20.0 ± 0.7, 50.7 ± 8.5, and 69.8 ± 4.1%, respectively. GTE exerted a broad, balanced metabolomics spectrum, involving suppression of the biosynthesis of cellular building blocks and oxidative-phosphorylation metabolites as well as promotion of the biosynthesis of membrane lipids and growth factors. M2 mainly induced mechanisms associated with energy and biosynthesis suppression. Therefore, GTE exerted mechanisms involving both promotion and suppression activities, whereas purified catechins induced extensive apoptosis. GTE could be a more promising antineovascularization remedy for ocular treatment.
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Affiliation(s)
- Kai On Chu
- Department of Ophthalmology and Visual Sciences , The Chinese University of Hong Kong, Hong Kong Eye Hospital , Kowloon , Hong Kong
- School of Biomedical Sciences , The Chinese University of Hong Kong , Shatin , New Territories , Hong Kong
| | - Kwok Ping Chan
- Department of Ophthalmology and Visual Sciences , The Chinese University of Hong Kong, Hong Kong Eye Hospital , Kowloon , Hong Kong
| | - Sun On Chan
- School of Biomedical Sciences , The Chinese University of Hong Kong , Shatin , New Territories , Hong Kong
| | - Tsz Kin Ng
- Department of Ophthalmology and Visual Sciences , The Chinese University of Hong Kong, Hong Kong Eye Hospital , Kowloon , Hong Kong
| | - Vishal Jhanji
- Department of Ophthalmology and Visual Sciences , The Chinese University of Hong Kong, Hong Kong Eye Hospital , Kowloon , Hong Kong
| | - Chi Chiu Wang
- School of Biomedical Sciences , The Chinese University of Hong Kong , Shatin , New Territories , Hong Kong
- Department of Obstetrics and Gynaecology , The Chinese University of Hong Kong , Shatin , New Territories , Hong Kong
- Li Ka Shing Institute of Health Science , The Chinese University of Hong Kong , Shatin , New Territories , Hong Kong
| | - Chi Pui Pang
- Department of Ophthalmology and Visual Sciences , The Chinese University of Hong Kong, Hong Kong Eye Hospital , Kowloon , Hong Kong
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Song EK, Park H, Kim HS. Additive effect of walnut and chokeberry on regulation of antioxidant enzyme gene expression and attenuation of lipid peroxidation in d-galactose-induced aging-mouse model. Nutr Res 2018; 70:60-69. [PMID: 30446253 DOI: 10.1016/j.nutres.2018.09.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 09/27/2018] [Accepted: 09/30/2018] [Indexed: 12/30/2022]
Abstract
Studies have highlighted the association between the cellular damage caused by reactive oxygen species and aging. The reducing sugar d-galactose causes aging-related changes and oxidative stress. Lipids are the first target of free radicals, and lipid peroxidation is related to aging. Walnut (Juglans regia Chandler) kernel contains antioxidant phenolic compounds, and chokeberry (Aronia melanocarpa) is one of the richest sources of polyphenols, including anthocyanins, among other fruits. Polyphenols from chokeberry exhibit antioxidant and anti-inflammatory activities. In this study, the additive antioxidative effect of walnut and chokeberry mixture was evaluated by oxidative stress index in d-galactose-induced aging model. Thirty-five Balb/c mice (8 weeks old) were divided into following five groups (n = 7 in each group): normal control (C), d-galactose control (D), d-galactose with chokeberry diet (CH), d-galactose with walnut diet (W), and d-galactose with walnut and chokeberry mixture diet (WCH). In all treatment diets groups, the levels of serum, hepatic, and kidney malonaldehyde were significantly lower than D group and the levels were approaching to control level. Moreover, the kidney malondialdehyde levels were significantly lower in WCH group compared with the control group. This study also confirmed the activities of antioxidant enzymes in liver, as the levels of superoxide dismutase, and glutathione peroxidase were significantly increased in CH group compared to in W or CH groups. The results of this study supported the additive effect of walnut and chokeberry on increment of antioxidant enzyme gene expression in liver and consequently the attenuation of lipid peroxidation in serum, liver, and kidney in d-galactose-induced aging-mouse model. Further studies are needed to investigate the detailed mechanism underlying the additive antioxidative effects in various tissues.
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Affiliation(s)
- Eun-Kyung Song
- Department of Food and Nutrition, College of Human Ecology, Sookmyung Women's University, Cheongpa-ro 47-gil 100 (Cheongpa-dong 2(i)-ga), Yongsan-gu, Seoul 04310, Korea
| | - Hyunjin Park
- ICAN Nutrition Education and Research, Seoul, Korea
| | - Hyun-Sook Kim
- Department of Food and Nutrition, College of Human Ecology, Sookmyung Women's University, Cheongpa-ro 47-gil 100 (Cheongpa-dong 2(i)-ga), Yongsan-gu, Seoul 04310, Korea.
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Gao J, Yu Z, Jing S, Jiang W, Liu C, Yu C, Sun J, Wang C, Chen J, Li H. Protective effect of Anwulignan against D-galactose-induced hepatic injury through activating p38 MAPK-Nrf2-HO-1 pathway in mice. Clin Interv Aging 2018; 13:1859-1869. [PMID: 30323572 PMCID: PMC6174312 DOI: 10.2147/cia.s173838] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Liver aging is a significant risk factor for chronic liver diseases. Oxidative stress has been considered as a conjoint pathological mechanism for the initiation and progression of liver aging. It has been reported that d-galactose (d-gal)-induced hepatic injury is an experimental model well established closely similar to morphological and functional features of liver aging. Schisandra sphenanthera Rehd. et Wils (S. sphenanthera, Schisandraceae), as a famous tradi-tional Chinese medicine, has been used for thousands of years in China to treat various disorders, including liver dysfunctions. This study was aimed to understand whether Anwulignan, one of the monomeric compounds in the lignans from S. sphenanthera, could improve the hepatic injury induced by d-gal in mice and to examine the possible mechanisms. Methods ICR mice were used to produce hepatic injury by 220 mg kg-1 d-gal subcutaneously once daily for 42 days. The effects of oral Anwulignan on liver index; serial AST and ALT levels; histological changes; SOD, GSH-Px, MDA, and 8-OHdG in the liver and peripheral blood; expression of p38 mitogen-activated protein kinase (MAPK), Nrf2, and HO-1 in the liver; and HepG2 cell viability, and decrease caspase-3 contents in liver were examined. Results Anwulignan could significantly increase the liver index, lower aspartate aminotransferase (AST) and alanine aminotransferase (ALT) levels in the peripheral blood, elevate superoxide dis-mutase (SOD) and glutathione peroxidase (GSH-Px) activities, and decrease malonaldehyde (MDA) and 8-hydroxy-2-deoxyguanosine (8-OHdG) contents in the peripheral blood and liver. Furthermore, Anwulignan could upregulate the expression of p38 mitogen-activated protein kinase (MAPK), Nrf2, and HO-1 in the liver, increase the HepG2 cell viability, and decrease caspase-3 contents in liver. Conclusion Anwulignan has protective effects against the hepatic injury induced by d-gal, which may be related to its antioxidant capacity through activating p38 MAPK-Nrf2-HO-1 pathway, increases the injured cell viability, and decreases the caspase-3 contents in liver.
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Affiliation(s)
- Jiaqi Gao
- Department of Pharmacology, College of Pharmacy, Beihua University, Jilin City, People's Republic of China, ;
| | - Zepeng Yu
- Department of Pharmacology, College of Pharmacy, Beihua University, Jilin City, People's Republic of China, ;
| | - Shu Jing
- Affiliated Hospital of Beihua University, Jilin City, People's Republic of China
| | - Weihai Jiang
- Affiliated Hospital of Beihua University, Jilin City, People's Republic of China
| | - Cong Liu
- Department of Pharmacology, College of Pharmacy, Beihua University, Jilin City, People's Republic of China, ;
| | - Chunyan Yu
- Department of Pharmacology, College of Pharmacy, Beihua University, Jilin City, People's Republic of China, ;
| | - Jinghui Sun
- Department of Pharmacology, College of Pharmacy, Beihua University, Jilin City, People's Republic of China, ;
| | - Chunmei Wang
- Department of Pharmacology, College of Pharmacy, Beihua University, Jilin City, People's Republic of China, ;
| | - Jianguang Chen
- Department of Pharmacology, College of Pharmacy, Beihua University, Jilin City, People's Republic of China, ;
| | - He Li
- Department of Pharmacology, College of Pharmacy, Beihua University, Jilin City, People's Republic of China, ;
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Majdi A, Sadigh-Eteghad S, Talebi M, Farajdokht F, Erfani M, Mahmoudi J, Gjedde A. Nicotine Modulates Cognitive Function in D-Galactose-Induced Senescence in Mice. Front Aging Neurosci 2018; 10:194. [PMID: 30061821 PMCID: PMC6055060 DOI: 10.3389/fnagi.2018.00194] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 06/08/2018] [Indexed: 01/21/2023] Open
Abstract
Here, we tested the claim that nicotine attenuates the signs of brain dysfunction in the model of brain aging induced by D-galactose (DGal) in mice. We administered nicotine at doses of 0.1, 0.5 and 1 mg/kg by the subcutaneous (s.c.) or at 0.1 mg/kg by the intranasal (i.n.) routes in mice that had received DGal at the dose of 500 mg/kg subcutaneous (s.c.) for 6 weeks. We assessed animal withdrawal signs as the number of presented somatic signs, thermal hyperalgesia, elevated plus maze (EPM) and open field tests. We evaluated spatial memory and recognition with Barnes maze and novel object recognition (NOR) tests. We tested brain tissue for reactive oxygen species (ROS), mitochondrial membrane potential, caspase-3, Bax, Bcl-2, cytochrome C, brain-derived neurotrophic factor and nerve growth factor levels. Nicotine administration in model groups (0.5 mg/kg s.c. and 0.1 mg/kg i.n. doses) significantly attenuated impairment of spatial and episodic memories in comparison to normal saline-received model group. These doses also reduced mito-oxidative damage as well as apoptosis and raised neurotrophic factors level in model groups in comparison to normal saline-received model group. The 1 mg/kg s.c. dose nicotine revealed withdrawal signs compared with the other nicotine-received groups. Nicotine at specific doses and routes has the potential to attenuate age-related cognitive impairment, mito-oxidative damage, and apoptosis. The doses raise neurotrophic factors without producing withdrawal signs.
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Affiliation(s)
- Alireza Majdi
- Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saeed Sadigh-Eteghad
- Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mahnaz Talebi
- Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Fereshteh Farajdokht
- Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Marjan Erfani
- Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Javad Mahmoudi
- Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Albert Gjedde
- Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Departments of Clinical Research and Nuclear Medicine, Odense University Hospital, University of Southern Denmark, Odense, Denmark
- Department of Neuroscience, University of Copenhagen, Copenhagen, Denmark
- Department of Neurology and Neurosurgery, McGill University, Montreal, QC, Canada
- Department of Radiology and Radiological Science, Johns Hopkins University, Baltimore, MD, United States
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Du K, Liu M, Zhong X, Yao W, Xiao Q, Wen Q, Yang B, Wei M. Epigallocatechin Gallate Reduces Amyloid β-Induced Neurotoxicity via Inhibiting Endoplasmic Reticulum Stress-Mediated Apoptosis. Mol Nutr Food Res 2018; 62:e1700890. [PMID: 29446867 DOI: 10.1002/mnfr.201700890] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 01/08/2018] [Indexed: 01/01/2023]
Abstract
SCOPE We investigated the role of endoplasmic reticulum (ER) stress in the protective effects of EGCG against the neuronal apoptosis in Aβ1-42 -induced SH-SY5Y cells and APP/PS1 transgenic mice. METHODS AND RESULTS Cell viability (CCK8 assay), flow cytometry, Hoechst 33258 staining, immunohistochemistry, transmission electron microscopy (TEM), and western blotting were used. EGCG prevented Aβ1-42-induced toxicity in SH-SY5Y cells, increased cell viability, and decreased apoptosis in a dose-dependent manner. In a subsequent mechanism study, it was found that this effect contributed to the down-regulation of GRP78, CHOP, cleaved-caspase-12 and -3. Moreover, EGCG also reduced the cytotoxicity induced by tunicamycin (TM) and thapsigargin (TG), two ER stress activators. Consistent with the in vitro study, EGCG inhibited neuronal apoptosis in the cortex of APP/PS1 transgenic mice, with the mitigation of ER abnormal ultrastructural swelling and the downregulation of ER-stress-associated proteins. CONCLUSION These results indicate that EGCG attenuates the neurotoxicity in Alzheimer's disease (AD) via a novel mechanism that involves inhibition of ER-stress-associated neuronal apoptosis in vitro and in vivo, suggesting the tremendous potential of EGCG for use in a nutritional preventive strategy against AD.
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Affiliation(s)
- Ke Du
- School of Pharmacy, Department of Pharmacology, China Medical University, Shenyang, Liaoning, China.,Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Shenyang, Liaoning, China
| | - Mingyan Liu
- School of Pharmacy, Department of Pharmacology, China Medical University, Shenyang, Liaoning, China.,Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Shenyang, Liaoning, China
| | - Xin Zhong
- School of Pharmacy, Department of Pharmacology, China Medical University, Shenyang, Liaoning, China.,Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Shenyang, Liaoning, China
| | - Weifan Yao
- School of Pharmacy, Department of Pharmacology, China Medical University, Shenyang, Liaoning, China.,Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Shenyang, Liaoning, China
| | - Qinghuan Xiao
- School of Pharmacy, Department of Ion Channel Pharmacology, China Medical University, Shenyang, Liaoning, China
| | - Quan Wen
- Shanghai Newsummit Biopharma Group, Zhangjiang Hi-Tech Park, Pudong District, Shanghai, China
| | - Bo Yang
- Shanghai Newsummit Biopharma Group, Zhangjiang Hi-Tech Park, Pudong District, Shanghai, China
| | - Minjie Wei
- School of Pharmacy, Department of Pharmacology, China Medical University, Shenyang, Liaoning, China.,Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Shenyang, Liaoning, China
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Chen SQ, Wang ZS, Ma YX, Zhang W, Lu JL, Liang YR, Zheng XQ. Neuroprotective Effects and Mechanisms of Tea Bioactive Components in Neurodegenerative Diseases. Molecules 2018; 23:E512. [PMID: 29495349 PMCID: PMC6017384 DOI: 10.3390/molecules23030512] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 02/23/2018] [Accepted: 02/23/2018] [Indexed: 12/19/2022] Open
Abstract
As the population ages, neurodegenerative diseases such as Parkinson's disease (PD) and Alzheimer's disease (AD) impose a heavy burden on society and families. The pathogeneses of PD and AD are complex. There are no radical cures for the diseases, and existing therapeutic agents for PD and AD have diverse side effects. Tea contains many bioactive components such as polyphenols, theanine, caffeine, and theaflavins. Some investigations of epidemiology have demonstrated that drinking tea can decrease the risk of PD and AD. Tea polyphenols can lower the morbidity of PD and AD by reducing oxidative stress and regulating signaling pathways and metal chelation. Theanine can inhibit the glutamate receptors and regulate the extracellular concentration of glutamine, presenting neuroprotective effects. Additionally, the neuroprotective mechanisms of caffeine and theaflavins may contribute to the ability to antagonize the adenosine receptor A2AR and the antioxidant properties, respectively. Thus, tea bioactive components might be useful for neuronal degeneration treatment in the future. In the present paper, the neuro protection and the mechanisms of tea and its bioactive components are reviewed. Moreover, the potential challenges and future work are also discussed.
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Affiliation(s)
- Shu-Qing Chen
- Tea Research Institute, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China.
| | - Ze-Shi Wang
- Tea Research Institute, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China.
| | - Yi-Xiao Ma
- Tea Research Institute, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China.
| | - Wei Zhang
- Tea Research Institute, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China.
| | - Jian-Liang Lu
- Tea Research Institute, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China.
| | - Yue-Rong Liang
- Tea Research Institute, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China.
| | - Xin-Qiang Zheng
- Tea Research Institute, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China.
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Kian K, Khalatbary AR, Ahmadvand H, Karimpour Malekshah A, Shams Z. Neuroprotective effects of (−)-epigallocatechin-3-gallate (EGCG) against peripheral nerve transection-induced apoptosis. Nutr Neurosci 2018; 22:578-586. [DOI: 10.1080/1028415x.2017.1419542] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Kosar Kian
- Molecular and Cell Biology Research Center, Department of Anatomy, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Ali Reza Khalatbary
- Molecular and Cell Biology Research Center, Department of Anatomy, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Hassan Ahmadvand
- Department of Biochemistry, Faculty of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran
- Razi Herbal Researches Center, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Abbasali Karimpour Malekshah
- Molecular and Cell Biology Research Center, Department of Anatomy, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Zahra Shams
- Molecular and Cell Biology Research Center, Department of Anatomy, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
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Antioxidant action of grape seed polyphenols and aerobic exercise in improving neuronal number in the hippocampus is associated with decrease in lipid peroxidation and hydrogen peroxide in adult and middle-aged rats. Exp Gerontol 2018; 101:101-112. [DOI: 10.1016/j.exger.2017.11.012] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 10/18/2017] [Accepted: 11/20/2017] [Indexed: 12/29/2022]
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Xiao-tong W, Fan H, Xiao-ling S. Pharmacokinetics Study of Seven Lignans in Alzheimer’s Rats. INT J PHARMACOL 2017. [DOI: 10.3923/ijp.2018.68.75] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Yang Q, Zhao C, Zhao J, Ye Y. Synthesis and neuroprotective effects of the complex nanoparticles of iron and sapogenin isolated from the defatted seeds of Camellia oleifera. PHARMACEUTICAL BIOLOGY 2017; 55:428-434. [PMID: 27937035 PMCID: PMC6130765 DOI: 10.1080/13880209.2016.1245346] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 09/28/2016] [Accepted: 09/30/2016] [Indexed: 05/26/2023]
Abstract
CONTEXT The defatted seeds of Camellia oleifera var. monosperma Hung T. Chang (Theaceae) are currently discarded without effective utilization. However, sapogenin has been isolated and shows antioxidative, anti-inflammatory and analgesic activities suggestive of its neuroprotective function. OBJECTIVE In order to improve the activities of sapogenin, the nanoparticles of iron-sapogenin have been synthesized, and the neuroprotective effects are evaluated. MATERIALS AND METHODS Structural characters of the nanoparticles were analyzed, and the antioxidant effect was assessed by DPPH method, and the neuroprotective effect was evaluated by rotenone-induced neurodegeneration in Kunming mice injected subcutaneously into the back of neck with rotenone (50 mg/kg/day) for 6 weeks and then treated by tail intravenous injection with the iron-sapogenin at the dose of 25, 50 and 100 mg/kg for 7 days. Mice behaviour and neurotransmitters were tested. RESULTS The product had an average size of 162 nm with spherical shape, and scavenged more than 90% DPPH radicals at 0.8 mg/mL concentration. It decreased behavioural disorder and malondialdehyde content in mice brain, and increased superoxide dismutase activity, tyrosine hydroxylase expression, dopamine and acetylcholine levels in brain in dose dependence, and their maximum changes were respectively up to 60.83%, 25.17%, 22.13%, 105.26%, 42.17% and 22.89% as compared to vehicle group. Iron-sapogenin nanoparticle shows significantly better effects than the sapogenin. DISCUSSION AND CONCLUSION Iron-sapogenin alleviates neurodegeneration of mice injured by neurotoxicity of rotenone, it is a superior candidate of drugs for neuroprotection.
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Affiliation(s)
- Qian Yang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, PR China
| | - Chuang Zhao
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, PR China
| | - Jun Zhao
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, PR China
| | - Yong Ye
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, PR China
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Cai P, Fang SQ, Yang XL, Wu JJ, Liu QH, Hong H, Wang XB, Kong LY. Rational Design and Multibiological Profiling of Novel Donepezil-Trolox Hybrids against Alzheimer's Disease, with Cholinergic, Antioxidant, Neuroprotective, and Cognition Enhancing Properties. ACS Chem Neurosci 2017; 8:2496-2511. [PMID: 28806057 DOI: 10.1021/acschemneuro.7b00257] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
A novel series of donepezil-trolox hybrids were designed, synthesized, and evaluated as multifunctional ligands against Alzheimer's disease (AD). Biological assays showed that these derivatives possessed moderate to good inhibitory activities against acetylcholinesterase (AChE) and monoamine oxidase B (MAO-B) as well as remarkable antioxidant effects. The optimal compound 6d exhibited balanced functions with good inhibition against hAChE (IC50 = 0.54 μM) and hMAO-B (IC50 = 4.3 μM), significant antioxidant activity (41.33 μM IC50 by DPPH method, 1.72 and 1.79 trolox equivalent by ABTS and ORAC methods), excellent copper chelation, and Aβ1-42 aggregation inhibition effect. Furthermore, cellular tests indicated that 6d has very low toxicity and is capable of combating oxidative toxin (H2O2, rotenone, and oligomycin-A) induced neurotoxicity. Most importantly, oral administration of 6d demonstrated notable improvements on cognition and spatial memory against scopolamine-induced acute memory deficit as well as d-galactose (d-gal) and AlCl3 induced chronic oxidative stress in a mouse model without acute toxicity and hepatotoxicity. In summary, both in vitro and in vivo results suggested that 6d is a valuable candidate for the development of a safe and effective anti-Alzheimer's drug.
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Affiliation(s)
- Pei Cai
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University , 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Si-Qiang Fang
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University , 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Xue-Lian Yang
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University , 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Jia-Jia Wu
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University , 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Qiao-Hong Liu
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University , 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Hao Hong
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University , 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Xiao-Bing Wang
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University , 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Ling-Yi Kong
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University , 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
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Milk Intake at Midlife and Cognitive Decline over 20 Years. The Atherosclerosis Risk in Communities (ARIC) Study. Nutrients 2017; 9:nu9101134. [PMID: 29039795 PMCID: PMC5691750 DOI: 10.3390/nu9101134] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 08/29/2017] [Accepted: 10/10/2017] [Indexed: 02/06/2023] Open
Abstract
Background: Faster rates of cognitive decline are likely to result in earlier onset of cognitive impairment and dementia. d-galactose, a derivative of lactose, is used in animal studies to induce neurodegeneration. Milk is the primary source of lactose in the human diet, and its effects on cognitive decline have not been fully evaluated. Objective: Assess the association of milk intake with change in cognitive function over 20 years. Methods: A total of 13,751 participants of the Atherosclerosis Risk in Communities (ARIC) cohort completed a food frequency questionnaire and three neurocognitive evaluations from 1990 through 2013. Two single nucleotide polymorphisms (SNPs) were used to determine lactase persistence (LCT-13910 C/T for Whites and LCT-14010 G/C for Blacks). Mixed-effects models were used to study the association of milk intake with cognitive change. Multiple imputations by chained equations were used to account for attrition. Results: Milk intake greater than 1 glass/day was associated with greater decline in the global z-score over a 20-year period. The difference in decline was 0.10 (95% CI: 0.16, 0.03) z-scores, or an additional 10% decline, relative to the group reporting “almost never” consuming milk. Conclusions: Replication of these results is warranted in diverse populations with greater milk intake and higher variability of lactase persistence genotype.
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Dong F, Wang S, Wang Y, Yang X, Jiang J, Wu D, Qu X, Fan H, Yao R. Quercetin ameliorates learning and memory via the Nrf2-ARE signaling pathway in d-galactose-induced neurotoxicity in mice. Biochem Biophys Res Commun 2017; 491:636-641. [DOI: 10.1016/j.bbrc.2017.07.151] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 07/27/2017] [Indexed: 12/28/2022]
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Renno WM, Benov L, Khan KM. Possible role of antioxidative capacity of (-)-epigallocatechin-3-gallate treatment in morphological and neurobehavioral recovery after sciatic nerve crush injury. J Neurosurg Spine 2017; 27:593-613. [PMID: 28777065 DOI: 10.3171/2016.10.spine16218] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
OBJECTIVE This study examined the capacity of the major polyphenolic green tea extract (-)-epigallocatechin-3-gallate (EGCG) to suppress oxidative stress and stimulate the recovery and prompt the regeneration of sciatic nerve after crush injury. METHODS Adult male Wistar rats were randomly assigned to one of 4 groups: 1) Naïve, 2) Sham (sham injury, surgical control group), 3) Crush (sciatic nerve crush injury treated with saline), and 4) Crush+EGCG (sciatic nerve crush injury treated with intraperitoneally administered EGCG, 50 mg/kg). All animals were tested for motor and sensory neurobehavioral parameters throughout the study. Sciatic nerve and spinal cord tissues were harvested and processed for morphometric and stereological analysis. For the biochemical assays, the time points were Day 1, Day 7, Day 14, and Day 28 after nerve injury. RESULTS After sciatic nerve crush injury, the EGCG-treated animals (Crush+EGCG group) showed significantly better recovery of foot position and toe spread and 50% greater improvement in motor recovery than the saline-treated animals (Crush group). The Crush+EGCG group displayed an early hopping response at the beginning of the 3rd week postinjury. Animals in the Crush+EGCG group also showed a significant reduction in mechanical allodynia and hyperalgesia latencies and significant improvement in recovery from nociception deficits in both heat withdrawal and tail flick withdrawal latencies compared with the Crush group. In both the Crush+EGCG and Crush groups, quantitative evaluation revealed significant morphological evidence of neuroregeneration according to the following parameters: mean cross-sectional area of axons, myelin thickness in the sciatic nerve (from Week 4 to Week 8), increase of myelin basic protein concentration and gene expression in both the injured sciatic nerve and spinal cord, and fiber diameter to axon diameter ratio and myelin thickness to axon diameter ratio at Week 2 after sciatic nerve injury. However, the axon area remained much smaller in both the Crush+EGCG and Crush groups compared with the Sham and Naïve groups. The number of axons per unit area was significantly decreased in the Crush+EGCG and Crush groups compared with controls. Sciatic nerve injury produced generalized oxidative stress manifested as a significant increase of isoprostanes in the urine and decrease of the total antioxidant capacity (TAC) of the blood from Day 7 until Day 14. EGCG-treated rats showed significantly less increase of isoprostanes than saline-treated animals and also showed full recovery of TAC levels by Day 14 after nerve injury. In spinal cord tissue analysis, EGCG-treated animals showed induced glutathione reductase and suppressed induction of heme oxygenase 1 gene expression compared with nontreated animals. CONCLUSIONS EGCG treatment suppressed the crush-induced production of isoprostanes and stimulated the recovery of the TAC and was associated with remarkable alleviation of motor and sensory impairment and significant histomorphological evidence of neuronal regeneration following sciatic nerve crush injury in rats. The findings of this study suggest that EGCG can be used as an adjunctive therapeutic remedy for nerve injury. However, further investigations are needed to establish the antioxidative mechanism involved in the regenerative process after nerve injury. Only upregulation of glutathione reductase supports the idea that EGCG is acting indirectly via induction of enzymes or transcription factors.
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Affiliation(s)
| | - Ludmil Benov
- Biochemistry, Faculty of Medicine, Kuwait University, Safat, Kuwait
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H 2S Donor NaHS Changes the Production of Endogenous H 2S and NO in D-Galactose-Induced Accelerated Ageing. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:5707830. [PMID: 28512525 PMCID: PMC5420433 DOI: 10.1155/2017/5707830] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Revised: 03/06/2017] [Accepted: 03/13/2017] [Indexed: 01/08/2023]
Abstract
Aims. The study was designed to explore whether hydrogen sulphide (H2S) and nitric oxide (NO) generation changed in D-galactose- (D-gal-) induced ageing, the possible effects of exogenous H2S supplementation, and related mechanisms. Results. In D-gal-induced senescent mice, both H2S and NO levels in the heart, liver, and kidney tissues were decreased significantly. A similar trend was observed in D-gal-challenged human umbilical vein endothelial cells (HUVECs). Sustained H2S donor (NaHS) treatment for 2 months elevated H2S and NO levels in these mice, and during this period, the D-gal-induced senescent phenotype was reversed. The protective effect of NaHS is associated with a decrease in reactive oxygen species levels and an increase in antioxidants, such as glutathione, and superoxide dismutase and glutathione peroxidase activities. Increased expression of the H2S-producing enzymes cystathionine γ-lyase (CSE) and cystathionine-β-synthase (CBS) in the heart, liver, and kidney tissues was observed in the NaHS-treated groups. NaHS supplementation also significantly postponed D-gal-induced HUVEC senescence. Conclusions. Endogenous hydrogen sulphide production in both ageing mice and endothelial cells is insufficient. Exogenous H2S can partially rescue ageing-related dysfunction by inducing endogenous H2S and NO production and reducing oxidative stress. Restoring endogenous H2S production may contribute to healthy ageing, and H2S may have antiageing effects.
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Protective effect of seleno-β-lactoglobulin (Se-β-lg) against oxidative stress in D-galactose-induced aging mice. J Funct Foods 2016. [DOI: 10.1016/j.jff.2016.09.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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Neuroprotective effects of Caralluma tuberculata on ameliorating cognitive impairment in a d-galactose-induced mouse model. Biomed Pharmacother 2016; 84:387-394. [DOI: 10.1016/j.biopha.2016.09.055] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 09/14/2016] [Accepted: 09/15/2016] [Indexed: 12/21/2022] Open
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Wang H, Wei S, Xue X, You Y, Ma Q. Adipose stem cells' antagonism in glycosylation of D-galactose-induced skin aging of nude mice and its skin recovery function. Int J Immunopathol Pharmacol 2016; 29:376-85. [PMID: 26916459 DOI: 10.1177/0394632016634348] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Accepted: 01/21/2016] [Indexed: 02/02/2023] Open
Abstract
This study aims to discuss adipose stem cells' (ASCs) antagonism in glycosylation of D-galactose-induced skin aging of nude mice and its skin recovery function; the study also aims to explore a new mechanism of anti-aging to provide clinical anti-aging therapy with new thoughts and methods. We selected 40 healthy specific pathogen-free (SPF) nude mice and divided them randomly into four groups which were: blank control group; D-galactose + phosphate buffer saline (PBS) group; D-galactose + ASCs treatment group; and D-galactose + aminoguanidine (AG) group. Results showed that the superoxide dismutase (SOD) level of mice in the D-galactose-induced model group (87.15 ± 4.95 U/g) decreased significantly compared with that of control group (146.21 ± 4.76 U/g), while malonaldehyde (MDA) level of mice in D-galactose induced model group (11.12 ± 2.08 nmol/mg) increased significantly compared with that of control group (5.46 ± 2.05 nmol/mg) (P <0.05); thus D-galactose induced sub-acutely aging mice models were duplicated successfully. Results also indicated that transplantation of ASCs could reverse expression of aging-related biomarkers such as MDA, SOD, and advanced glycosylation end products (AGEs); hematoxylin and eosin (HE) staining showed that thickness of the dermis layer as well as the collagen content of mice in the D-galactose-induced model group increased significantly after ASC transplantation compared with that of control group. In addition, immunohistochemical assay showed that expression quantity of CD31 and vascular endothelial growth factor (VEGF) of mice in the D-galactose-induced model group increased significantly after ASC transplantation compared with that of control group. In conclusion, ASCs can trace cell distribution successfully through bioluminescence, and they survive for a short time in the skin after transplantation, which provides a basis for the application of ASC transplantation in clinical practices. Moreover, ASCs can control glycosylation level of D-galactose-induced skin aging of nude mice, reverse expression of aging-related biomarkers as well as restrain formation of advanced glycation end products, which are similar to the effects of AG inhibitors of advanced glycation end products. Thus, ASCs can prevent glycosylation-induced skin aging as well as recover functions of skin.
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Affiliation(s)
- Haiying Wang
- Department of Dermotology, Dongying People's Hospital of Shandong Provincial Hospital Group, Dongying, Shandong, PR China
| | - Shuyue Wei
- Department of Dermotology, Dongying People's Hospital of Shandong Provincial Hospital Group, Dongying, Shandong, PR China
| | - Xinxin Xue
- Binzhou Medical University, Yantai, Shandong, PR China
| | - Yuntian You
- Department of Dermotology, Dongying People's Hospital of Shandong Provincial Hospital Group, Dongying, Shandong, PR China
| | - Qiang Ma
- Department of Dermotology, Dongying People's Hospital of Shandong Provincial Hospital Group, Dongying, Shandong, PR China
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MLADENOV M, GOKIK M, HADZI-PETRUSHEV N, GJORGOSKI I, JANKULOVSKI N. The Relationship Between Antioxidant Enzymes and Lipid Peroxidation in Senescent Rat Erythrocytes. Physiol Res 2015; 64:891-6. [DOI: 10.33549/physiolres.932890] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The aim of this study was to gain more complete information about the relationships between some endogenous antioxidants and the malondialdehyde (MDA) as a marker of lipid peroxidation, during D-galactose induced senescence. The activities of superoxide dismutase (SOD), glutathione peroxidase (GPx), catalase (CAT) and the concentrations of uric acid (UA) in plasma and MDA in erythrocyte’s hemolysate, were determined in 15 D-galactose (D-gal), treated rats and compared with 15 placebo. The activity of the erythrocyte’s CAT was found significantly increased due to the senescence. The ratio of the activities of antioxidant enzymes R=SOD/(GPx+CAT) was significantly decreased due to the senescence and negatively correlated with the MDA (ρ=–0.524, p=0.045). The antioxidant enzymes SOD and GPx negatively correlated with the MDA, while CAT displayed no correlation. Further, the UA positively correlated with the ratio of activities of the antioxidant enzymes R=SOD/(GPx+CAT), (ρ=0.564, p=0.029 for senescent rats). Obtained results may contribute to better understanding of the process of D-gal induced senescence in the erythrocytes.
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Affiliation(s)
- M. MLADENOV
- Faculty of Natural Sciences and Mathematics, Institute of Biology, “Sts, Cyril and Methodius” University, Skopje, Macedonia
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Foyet HS, Asongalem AE, Oben EK, Cioanca O, Hancianu M, Hritcu L. Effects of the Methanolic Extract of Vitellaria paradoxa Stem Bark Against Scopolamine-Induced Cognitive Dysfunction and Oxidative Stress in the Rat Hippocampus. Cell Mol Neurobiol 2015; 36:1139-49. [PMID: 26620052 DOI: 10.1007/s10571-015-0310-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 11/24/2015] [Indexed: 12/20/2022]
Abstract
Vitellaria paradoxa C.F. Gaertn (Sapotaceae) is a perennial three which naturally grows in the northern part of Cameroon. It has been traditionally used in the Cameroonian folk medicine for treating inflammation and pain. In the present study, we evaluate the possible anti-amnesic and antioxidative effects of the methanolic extract of V. paradoxa stem bark in an Alzheimer's disease (AD) rat model of scopolamine. Rats received a single injection of scopolamine (1.5 mg/kg) before behavioral testing and were treated with the methanolic extract (25 and 50 mg/kg), daily, for eight continuous days. Also, the antioxidant activity in the hippocampus was assessed using the total content of reduced glutathione and malondialdehyde levels. The scopolamine-treated rats exhibited the following: decrease of exploratory time and discrimination index within the novel object recognition test, decrease of spontaneous alternations percentage within Y-maze task, and increase of working memory errors, reference memory errors, and time taken to consume all five baits within radial arm-maze task. Administration of the methanolic extract significantly improved these parameters, suggesting positive effects on memory formation processes and antioxidant potential. Our results suggest that the methanolic extract ameliorates scopolamine-induced memory impairment by attenuation of the oxidative stress in the rat hippocampus.
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Affiliation(s)
- Harquin Simplice Foyet
- Department of Biological Sciences, Faculty of Science, University of Maroua, P.O. Box 814, Maroua, Cameroon.
| | - Acha Emmanuel Asongalem
- Department of Biomedical Sciences, Faculty of Health Sciences, University of Buea, P.O. Box 63, Buea, Cameroon
| | - Eyong Kenneth Oben
- Department of Organic Chemistry, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
| | - Oana Cioanca
- Faculty of Pharmacy, University of Medicine and Pharmacy "Gr. T. Popa", 16 University Str., 700117, Iasi, Romania
| | - Monica Hancianu
- Faculty of Pharmacy, University of Medicine and Pharmacy "Gr. T. Popa", 16 University Str., 700117, Iasi, Romania
| | - Lucian Hritcu
- Department of Biology, Alexandru Ioan Cuza University of Iasi, Bd. Carol I, No. 11, 700506, Iasi, Romania.
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Caffeine prevents d-galactose-induced cognitive deficits, oxidative stress, neuroinflammation and neurodegeneration in the adult rat brain. Neurochem Int 2015. [DOI: 10.1016/j.neuint.2015.07.001] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Soung HS, Wang MH, Tseng HC, Fang HW, Chang KC. (−)Epigallocatechin-3-gallate decreases the stress-induced impairment of learning and memory in rats. Neurosci Lett 2015; 602:27-32. [DOI: 10.1016/j.neulet.2015.06.035] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 05/18/2015] [Accepted: 06/17/2015] [Indexed: 11/26/2022]
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HADZI-PETRUSHEV N, STOJKOVSKI V, MITROV D, MLADENOV M. D-Galactose Induced Changes in Enzymatic Antioxidant Status in Rats of Different Ages. Physiol Res 2015; 64:61-70. [DOI: 10.33549/physiolres.932786] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Considering the preexisting influence of the process of natural aging on antioxidant enzymes activity and the level of lipid peroxidation, the age of the rats at which D-galactose (D-gal) treatment is started could strongly impact the development of D-gal induced senescence. To evaluate this, we subjected 1, 3 and 15 months old rats to D-gal treatment in parallel with having appropriate placebos (0.9 % saline). Our results showed elevated glutathione peroxidase (GPx) activity and no significant changes in superoxide dismutase (SOD), catalase (CAT) and glutathione reductase (GR) activity or malondialdehyde (MDA) levels in relation to natural aging. In mature and aged senescent livers we observed positive correlation between increased ratio R=SOD/(GPx+CAT) and increased MDA concentration. MDA levels seemed to correlate positively with the age of the animals at which D-gal treatment had started. In the case of 3 and 15 months old rats there was D-gal induced decrease in SOD and GR activity, but this effect of the treatment was not observed in 1 month old rats. Our results imply that the changes in the antioxidant enzyme activities are not only under the influence of the D-gal overload, but also depend on the developmental stage of the rats. According to our results, with regard to enzymatic antioxidant capacity and the level of lipid peroxidation, the best age for induction of senescence is somewhere after the third month.
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Affiliation(s)
- N. HADZI-PETRUSHEV
- Faculty of Natural Sciences and Mathematics, Institute of Biology, “Ss. Cyril and Methodius” University, Skopje, Macedonia
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Abstract
Polyphenols have been shown to have some of the neuroprotective effects against neurodegenerative diseases. These effects are attributed to a variety of biological activities, including free radical scavenging/antioxidant and anti-inflammatory and anti-apoptotic activities. In this regard, many efforts have been made to study the effects of various well-known dietary polyphenols on spinal cord injury (SCI) and to explore the mechanisms behind the neuroprotective effects. The aim of this paper is to present the mechanisms of neuroprotection of natural polyphenols used in animal models of SCI.
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Affiliation(s)
- Ali Reza Khalatbary
- Molecular and Cell Biology Research Center, Faculty of Medicine, Mazandaran University of Medical Sciences, 18KM Khazar Blvd, Khazar Sq. Sari, Iran. m
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Yang W, Shi L, Chen L, Zhang B, Ma K, Liu Y, Qian Y. Protective effects of perindopril on d-galactose and aluminum trichloride induced neurotoxicity via the apoptosis of mitochondria-mediated intrinsic pathway in the hippocampus of mice. Brain Res Bull 2014; 109:46-53. [DOI: 10.1016/j.brainresbull.2014.09.010] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 09/22/2014] [Accepted: 09/23/2014] [Indexed: 01/04/2023]
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Ye Y, Xing H, Li Y. Nanoencapsulation of the sasanquasaponin from Camellia oleifera, its photo responsiveness and neuroprotective effects. Int J Nanomedicine 2014; 9:4475-84. [PMID: 25278752 PMCID: PMC4178501 DOI: 10.2147/ijn.s64313] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Sasanquasaponin, a bioactive compound isolated from seeds of Camellia oleifera, shows central effects in our previous research. In order to investigate its neuroprotective effects, a new kind of nanocapsule with photo responsiveness was designed to deliver sasanquasaponin into the brain and adjusted by red light. The nanocapsule was prepared using sasanquasaponin emulsified with soybean lecithin and cholesterol solution. The natural phaeophorbide from silkworm excrement as a photosensitizer was added in the lipid phase to make the nanocapsules photo responsive. The physicochemical properties of encapsulation efficiency, size distribution, morphology and stability were measured using high-performance liquid chromatography, particle size analyzer, transmission electron microscope, differential scanning calorimetry and thermogravimetry. Photo responsiveness was determined by the sasanquasaponin release in pH 7.5 phosphate buffer under the laser at 670 nm. The neuroprotective effects were evaluated by the expression of tyrosine hydroxylase (TH), decrease of inflammatory cytokines TNF-α and IL-1β in the brain, and amelioration of kainic acid-induced behavioral disorder in mice. The nanocapsules had higher encapsulation efficiency and stability when the phaeophorbide content was 2% of lecithin weight. The average size was 172.2 nm, distributed in the range of 142-220 nm. The phaeophorbide was scattered sufficiently in the outer lecithin layer of the nanocapsules and increased the drug release after irradiation. TH expression in brain tissues and locomotive activities in mice were reduced by kainic acid, but could be improved by the sasanquasaponin nanocapsules after tail vein injection with 15 minutes of irradiation at the nasal cavity. The sasanquasaponin took effect through inflammatory alleviation in central tissues. The sasanquasaponin nanocapsules with phaeophorbide have photo responsiveness and neuroprotective effects under the irradiation of red light. This preparation presents a new approach to brain neuroprotection, and has potential for clinical application.
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Affiliation(s)
- Yong Ye
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, People's Republic of China
| | - Haiting Xing
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, People's Republic of China
| | - Yue Li
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, People's Republic of China
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Ye Y, Fang F, Li Y. Isolation of the sapogenin from defatted seeds of Camellia oleifera and its neuroprotective effects on dopaminergic neurons. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:6175-6182. [PMID: 24909656 DOI: 10.1021/jf501166w] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Sasanqua saponin is a major active compound in the defatted seeds of Camellia oleifera but is always discarded without effective utilization. The sapogenin from hydrolysis of sasanqua saponin was purified, and its amination derivative was investigated on its neuroprotective effects, which were evaluated by animal models of Parkinson disease in mice induced by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP). The results showed that the sapogenin and its derivative increased dopamine content in striatum and tyrosine hydroxylase (TH) positive cells in substantia nigra and relieved inflammation and behavioral disorder, but the effect on movement was reversed by dopamine receptor antagonist haloperidol and was not intervened by adenosine receptor antagonist CGS 15943. Molecular simulation showed the interaction between dopamine receptor and the sapogenin or its derivative. It is proven that the sapogenin can protect dopamine neurons through antineuroinflammation and activation of dopamine receptor rather than adenosine receptor, and its amination improves the effects. This research provides the prospective prodrugs for Parkinson disease and a new medicinal application of sasanqua saponin.
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Affiliation(s)
- Yong Ye
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, South China University of Technology , Guangzhou 510640, People's Republic of China
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Liu M, Chen F, Sha L, Wang S, Tao L, Yao L, He M, Yao Z, Liu H, Zhu Z, Zhang Z, Zheng Z, Sha X, Wei M. (-)-Epigallocatechin-3-gallate ameliorates learning and memory deficits by adjusting the balance of TrkA/p75NTR signaling in APP/PS1 transgenic mice. Mol Neurobiol 2014; 49:1350-63. [PMID: 24356899 PMCID: PMC4012162 DOI: 10.1007/s12035-013-8608-2] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Accepted: 12/08/2013] [Indexed: 12/11/2022]
Abstract
Alzheimer's disease (AD) is pathologically characterized by deposition of β-amyloid (Aβ) peptides, which closely correlates with the balance of nerve growth factor (NGF)-related TrkA/p75NTR signaling. (-)-Epigallocatechin-3-gallate (EGCG) is used for prevention and treatment of many neurodegenerative diseases, including AD. However, whether the neuroprotective effects of EGCG treatment were via modulating the balance of TrkA/p75NTR signaling was still unknown. In this study, we found that EGCG treatment (2 mg·kg(-1)·day(-1)) dramatically ameliorated the cognitive impairments, reduced the overexpressions of Aβ(1-40) and amyloid precursor protein (APP), and inhibited the neuronal apoptosis in the APP/PS1 mice. Interestingly, the EGCG treatment enhanced the relative expression level of NGF by increasing the NGF/proNGF ratio in the APP/PS1 mice. Moreover, after EGCG treatment, TrkA signaling was activated by increasing the phosphorylation of TrkA following the increased phosphorylation of c-Raf, ERK1/2, and cAMP response element-binding protein (CREB), simultaneously the p75NTR signaling was significantly inhibited by decreasing the p75ICD expression, JNK2 phosphorylation, and cleaved-caspase 3 expression, so that the Aβ deposits and neuronal apoptosis in the hippocampus were inhibited.
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Affiliation(s)
- Mingyan Liu
- Department of Pharmacology, School of Pharmaceutical Sciences, China Medical University, No.92 Bei’er Road, Heping District, Shenyang, 110001 Liaoning Province People’s Republic of China
| | - Fujun Chen
- Department of Pharmacology, School of Pharmaceutical Sciences, China Medical University, No.92 Bei’er Road, Heping District, Shenyang, 110001 Liaoning Province People’s Republic of China
| | - Lei Sha
- Department of Pharmacology, School of Pharmaceutical Sciences, China Medical University, No.92 Bei’er Road, Heping District, Shenyang, 110001 Liaoning Province People’s Republic of China
| | - Shuang Wang
- Department of Pharmacology, School of Pharmaceutical Sciences, China Medical University, No.92 Bei’er Road, Heping District, Shenyang, 110001 Liaoning Province People’s Republic of China
| | - Lin Tao
- Department of Pharmacology, School of Pharmaceutical Sciences, China Medical University, No.92 Bei’er Road, Heping District, Shenyang, 110001 Liaoning Province People’s Republic of China
| | - Lutian Yao
- Department of Pharmacology, School of Pharmaceutical Sciences, China Medical University, No.92 Bei’er Road, Heping District, Shenyang, 110001 Liaoning Province People’s Republic of China
| | - Miao He
- Department of Pharmacology, School of Pharmaceutical Sciences, China Medical University, No.92 Bei’er Road, Heping District, Shenyang, 110001 Liaoning Province People’s Republic of China
| | - Zhimin Yao
- Department of Pharmacology, School of Pharmaceutical Sciences, China Medical University, No.92 Bei’er Road, Heping District, Shenyang, 110001 Liaoning Province People’s Republic of China
| | - Hang Liu
- Department of Pharmacology, School of Pharmaceutical Sciences, China Medical University, No.92 Bei’er Road, Heping District, Shenyang, 110001 Liaoning Province People’s Republic of China
| | - Zheng Zhu
- Department of Pharmacology, School of Pharmaceutical Sciences, China Medical University, No.92 Bei’er Road, Heping District, Shenyang, 110001 Liaoning Province People’s Republic of China
| | - Zhenjie Zhang
- Department of Pharmacology, School of Pharmaceutical Sciences, China Medical University, No.92 Bei’er Road, Heping District, Shenyang, 110001 Liaoning Province People’s Republic of China
| | - Zhihong Zheng
- Laboratory Animal Center, China Medical University, Shenyang, People’s Republic of China
| | - Xianzheng Sha
- Department of Biomedical Engineering, College of Basic Medical Science, China Medical University, Shenyang, People’s Republic of China
| | - Minjie Wei
- Department of Pharmacology, School of Pharmaceutical Sciences, China Medical University, No.92 Bei’er Road, Heping District, Shenyang, 110001 Liaoning Province People’s Republic of China
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50
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Wang C, He L, Yan M, Zheng GY, Liu XY. Effects of polyprenols from pine needles of Pinus massoniana on ameliorating cognitive impairment in a D-galactose-induced mouse model. AGE (DORDRECHT, NETHERLANDS) 2014; 36:9676. [PMID: 24981114 PMCID: PMC4150899 DOI: 10.1007/s11357-014-9676-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Accepted: 06/18/2014] [Indexed: 05/14/2023]
Abstract
Cognitive deficiency and oxidative stress have been well documented in aging and in neurodegenerative disorders such as Alzheimer's disease. In this study, we assessed the therapeutic effect of polyprenols on D-galactose-induced cognitive impairment in mice by testing on of behavioral and cognitive performance. In order to explore the possible role of polyprenols against D-galactose-induced oxidative damages, we assessed various biochemical indicators. Chronic administration of D-galactose (150 mg/kg·d, s.c.) for 7 weeks significantly impaired cognitive performance (both in step-through passive and active avoidance tests) and locomotor activity (in open-field test) and the ability of spatial learning and memory (in Morris water maze test) compared with the control group. The results revealed that polyprenols treatment for 2 weeks significantly ameliorated model mice's cognitive performance and oxidative defense. All groups of polyprenols enhanced the learning and memory ability in step-through passive and active avoidance tests, locomotor activity in open-field test, and the ability of spatial learning and memory in Morris water maze test. Furthermore, high and middle level of polyprenols significantly increased total antioxidative capacity (T-AOC), glutathione peroxidase (GSH-Px), super oxide dismutase (SOD) activity, neprilysin (NEP), and β-site AβPP cleaving enzyme 1 (BACE1) expression, while nitric oxide (NO), nitric oxide synthase (NOS) activity, malondialdehyde (MDA) concentration, and the level of Aβ1-42 and presenilin 1 (PS1) were decreased. Polyprenols have a significant relieving effect on learning, memory, and spontaneous activities in a D-galactose-induced mouse model and ameliorates cognitive impairment and biochemical dysfunction in mice. In summary, we have demonstrated that polyprenols may ameliorate memory and cognitive impairment via enhancing oxidative defense and affecting generation and dissimilation of Aβ-related enzymes, suggesting that polyprenols represent a novel drug for treating Alzheimer's disease.
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Affiliation(s)
- Cong Wang
- />Department of Pharmacology, China Pharmaceutical University, No. 24 Tong Jia Xiang, Nanjing, 210009, JiangSu Province China
| | - Ling He
- />Department of Pharmacology, China Pharmaceutical University, No. 24 Tong Jia Xiang, Nanjing, 210009, JiangSu Province China
| | - Ming Yan
- />National Drug Screening Laboratory, China Pharmaceutical University, Nanjing, 210009 China
| | - Guang-yao Zheng
- />Institute of Chemical Industry of Forest Products, CAF, National Engineering Lab for Biomass Chemical Utilization, Key and Open Lab of Forest Chemical Engineering, SFA, Key Lab of Biomass Energy and Material, Jiangsu Province, Nanjing, 210042 China
| | - Xiao-yang Liu
- />Department of Pharmacology, China Pharmaceutical University, No. 24 Tong Jia Xiang, Nanjing, 210009, JiangSu Province China
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